What is the most interesting part of the book along walk to water

When we say “The Civil War” here in America we are referring to our own Civil War that happened 150 years ago. The Civil War in Sudan was only 25 years ago. During the War in Sudan many people were killed, children were made orphans and families were separated. In order to get to safety many people walked to Ethiopia or Kenya

This question is more an opinion statement. I remember reading that book when i was in seventh grade. One of the things that i thought was most interesting about the book was the fact that after everything that Salva went through, he went to the US and then at the end, he went back to help people in Sudan. I thought it was even more interesting that the book was based on true events. 

I think it is B. But I’m not 100% sure