The teacher asks S2 to explain what S1 said just now. After S2 finishes, which is the best practice for the teacher?
A、The teacher asks S1 “Is that what you meant just now?”
B、The teacher says “Thank you. You’ve been listening very carefully.”
C、The teacher says “You’ve both got it made.”
D、The teacher says “I’m afraid you’ve heard S1 wrong.”