Which statement best introduces a story about a girl who has to think about telling her teacher that her best friend was cheating on a test?

A) In the end, Mary Ann knew that she had done the right thing, even if it was a painful thing to do.
B) Mary Ann couldn't believe what she was seeing; her best friend Margaret was cheating on Mrs. Brown's science test!
C) Mary Ann knew that she'd lost a friendship, but she'd also gained a sense of pride and responsibility no one could take away.
D) When Mary Ann woke up for school that morning, she had no idea that she'd be faced with a choice between the doing the right thing and keeping a friendship.