在本节中，你将听到15个对话，每个对话有一个问题。请从[A]、[B]、[C]三个选项中选出答案。每段话后有15秒钟的停顿，以便回答问题和阅读下一问题。每段对话读两遍。
下面，请听这些对话。
What does the man imply

[A] He thinks it is not necessary.
B. He is also worried about Mary.
C. He is worried about her mother’s health too.