—Hi, John. What are you going to do this Sunday?

—_______. Do you have any ideas? [ ]

A. Nothing serious.

B. Nothing much.

C. No problem

D. Thank you.

全脂奶粉加开水冲调，使其成分与鲜牛奶相似，其容积比应是（）

A.1：1

B.1：2

C.1：4

D.1：6

E.1：8