Excuse me,  can you tell me_____?[ ]

A. why was the train .late    

B.  why the train was late

C.  why is the train late  

D.  why the train is late

房地产类代销业务的有权部门将相关产品方案与发售方案书面告知地产金融部之后，地产金融部应在（）个工作日内给予回复。

A.1

B.2

C.3

D.4