问题详情

Samuel: What a surprise! You have changed your car. Diana: Yes, and another surprise. I"m going to get engaged with Jessica. Samuel: ______.
A．Really？ Congratulations!
B．Oh, sorry, I nearly forgot that.
C．I"m sorry to hear it.
D．I don"t know what to say. Take care of yourself!请帮忙给出正确答案和分析，谢谢！