Which revision clarifies the confusing pronoun in this sentence?

Complete Question:

Which revision clarifies the confusing pronoun in this sentence?

Andrew told me that his uncle was a World War II veteran when he was in high school.

The revision which clarifies the confusing pronoun in this sentence is as follows:

When Andrew was in high school, he told me that his uncle was a World War II veteran.

Explanation:

This revision clarifies who the pronoun "he" refers to.  This means that it clarifies that Andrew was the person in high school when his uncle was a World War II veteran, and not that his uncle was a World War II veteran when the uncle was in high school.  The revision makes it very clear that it was Andrew who was in high school and not his uncle by the time Andrew's uncle had been a World War II veteran.

idk that a good answer

explanation: