2.Excuse me,------?Do you know?----yes.I know------.

2.Excuse me,______?Do you know?----yes.I know______.
A.where jack lives;where he lives
B.where does jack live;where does he live
C.where jack lives;where does he live
D.where does jack live;where he lives
问句的宾语从句语序有问题的是BC,因此排除,那么AD又有什么区别呢,请指教!