— What are you going to do this afternoon?

— I'll probably go for a walk later on________it stays fine. [ ]

A. as far as  

B. so long as

C. even if  

D. as though

乙某持甲某的借条要甲某还钱，甲某不仅不还钱，反而指使丙某、丁某将乙某强行扣留在一暗室内，并对其进行殴打，直至乙某交出借条承诺永不索还，才将乙某释放。（）

A.甲某构成抢劫罪和非法拘禁罪

B.甲某构成绑架罪

C.甲某构成敲诈勒索罪

D.甲某构成抢劫罪