若是假命题，则（   ）

A：是真命题，是假命题

B：、均为假命题

C：、至少有一个是假命题

D：、   I slowly look at all the pieces; I don't know which one to choose. Just then Dad calls us Grandma is going home, He wants us to say goodbye to her. I hurry to the front door where they are standing. Jenny comes a few minutes later. I say, "Grandma, I hope to see you soon. I always feel sad when you leave. "Jenny stands behind me and doesn't say anything. After Grandma goes home, I find out why Jenny doesn't say anything.
   She has most of our candies in her mouth! Only a few pieces are left in the bottom of the box! Then I'm sad!