22. Aaron: I’ve decided to drop my biology major and start a new major next semester.Mike: But you’ve only been in the department one semester! _______ Aaron: Not really, I only took it because my parents thought it would be a good thing to do.Mike: So, what will you study now?(A) Don’t you like it?(B) Why wait? Let’s leave now.(C) Do you mind if I ask you a favor?(D) Why bother to change your semester?