单项选择题

A.K-K's mother had a store.
B.K-K and her mother had a lot of experience of doing business.
C.K-K and her mother asked a lot of people for advice.
D.K-K's mother didn't give her any help.

A.K-K's
B.
B.K-K
C.
C.K-K
D.
D.K-K's
E.