题干
根据问句选答句。
How old are you?____ A. I'm 10.
Happy birthday！____ B. Five.
How are you?____ C. Thank you.
How many boxes?____ D. I'm fine, thank you.
I have a ruler.____ E. Me, too.
答案(点此获取答案解析）
A,C,D,B,E
，则满足集合
的个数为（ ）