一段英语对话求解释：W：You should have your mail held at the post office until you get back
W：You should have your mail held at the post office until you get back
M：Good idea!I remembered to get the newspaper stopped but i'd forgotten about that
Q:What are the two people talking about?
A.The vacationB.The mail C.The newspaper D.The office
答案为A,求解释~