单项选择题

[听力原文]
W: Hi, Jack how about a party this weekend
M: Sounds great ! What is the ’party for

What does the man want to know()

A.He wants to know when to have the party.
B.He wants to know who should be invited.
C.He wants to know what the purpose of the party is.
D.He wants to know what kinds of parties are needed.