锅炉给水系统排污的目的是（）。

A、控制液位

B、防止反应器壳程及汽包结垢

C、防止腐蚀

D、控制PH值

— I prefer to eat cakes that have cream on top.

— ______! They are delicious. [ ]

A. Good luck

B. Me, too

C. I hope so

D. You're kidding