Bobby, Who Was Once a Vibrant and Active Teen, Has

Bobby, who was once a vibrant and active teen, has become distant and isolated. He told you that he isn't eating or sleeping properly, and he has given you his cherished video game collection. Why should you be alarmed about Bobby's behaviour?

A) because Bobby isn't interested in spending time with you
B) because it sounds like Bobby wants to commit suicide
C) because it sounds like Bobby is depressed
D) because Bobby seems to want to run away