How old ?

[v0031]

At 15, Stephen Sutton found out that he had cancer. Instead of feeling sorry for himself, he decided to make the most of the day and live every second to the fullest. He ended up achieving more in a few years than many could in a lifetime.
Stephen made a long list, which had goals ranging from skydiving to hugging a huge animal. He didn't manage to check off all the items on his list, but he did achieve the first item, which was to raise money for the Teenage Cancer Trust.
At first, he set out to raise £10,000 for the Trust. However, the passion（热情）he put into his fund-raising efforts drew the attention of many famous people. In a matter of months, Stephen raised over £3 million.
Stephen had wanted to study hard and become a doctor so that he could make a contribution to the world. However, his doctors suggested that he take a year off from school. Instead of following their suggestion, Stephen continued with his studies， receiving excellent grades.
In December 2012, doctors told him that his disease was not able to be cured. That was when he made his list and decided to put his energy into raising money for young people with cancer. Stephen saw this as the best way to make his own life better. T don't see the point in measuring（测量）life in terms of time anymore. I'd rather measure life in terms of making a difference," he said.
On May 14, 2014, Stephen passed away in his sleep. He was 19. Tributes（哀悼）poured in from all over the world, calling him exactly what he was- a selfless and inspiring person. His experience teaches us the importance of appreciating life and helping others.

How old was Stephen when he decided to raise money for the Teenage Cancer Trust?
A. 15.   B. 17.   C. 19.   D. 21.

[GeorgiaModerate]

I'll go with 17.  These are the key facts:

In December 2012, doctors told him that his disease was not able to be cured. That was when he made his list and decided to put his energy into raising money for young people with cancer.

On May 14, 2014, Stephen passed away in his sleep. He was 19.

[Dr. Arch]

I'll go with 17.  These are the key facts:

In December 2012, doctors told him that his disease was not able to be cured. That was when he made his list and decided to put his energy into raising money for young people with cancer.

On May 14, 2014, Stephen passed away in his sleep. He was 19.

This is confusing. He found out at 15 that he had cancer, and there is no indication that he decided to raise it later, from observing the second and third paragraphs.

In 2012, when the guy was 17, is when he found out it was terminal, yet the reading also says that's when it says that he decided to raise money as well.

The inferential reading says he was 15 when he likely first decided to do it, but the literal reading (separating the first three paragraphs as meaningless context only) says he was 17 when he decided and actually started doing it (?).

-shrugs-