Good morning, John. How are you doing? 早上好，约翰。最近怎么样啊？( )还不错，你呢

Good morning, John. How are you doing? 早上好，约翰。最近怎么样啊？( )还不错，你呢？

A.I am pleased.

B.Good night.

C.Not so bad. And you?

D.How do you do?

正确答案是C