——________ you tell me how to write it in English?——I'm sorry, I can't.
A:Can
B:Must
C:May
D:Need
如图所示,甲、乙、丙三只相同的杯子,分别盛有质量相同的水、酒精和盐水,则甲、乙、丙杯子中所盛的液体分别是( )