M: This course is really difficult. ,F: I don't think it's all that bad. And we'll benefit a lot from it. ,M: So you're taking it, too. ,F: That's true.
(A) M: I'm so surprised that you think the course is really hard, because I think it is quite easy. (B) M: I agree with you. This course is quite easy. We will not take it. (C) M: I didn’t hear you. Please could you tell me again? (D) M: All right. I agree. This course is worth taking.
D