单项选择题

[听力原文]
W: Jack, would you like to come over to join us for the party this evening
M: I’d like to, but I have to finish my homework today.

Why won’t Jack join in the party()

A.Because he’ll do his homework.
B.Because he’ll be with his friends.
C.Because he doesn’t like the party.
D.Because he doesn’t know.