A: Jack can't stay out with his friends now that school has started. B: ______.

A．I do believe Jack has made a right decision.
B．Yes, t agree, grades are more important than parties. His grades dropped.
C．Yes, that's right. After all, young people should not be too close to their friends.
D．No, I don't think Jack is right. After all, work is work. Play is play.