单项选择题

Woman: We have turned in our proposal for setting up a new agency in China.
Man: But the general manager has to turn it over before a decision has been made.
Question: What does the man mean

A.The general manager has to set up a new agency
B.The general manager has to turn down the proposal
C.The general manager has to think about the proposal carefully
D.The general manager has to revise the proposal