— Do you think he will do me a favor?

— As far as I know, he is the last one to help others. He _______ be prepared to give

      you a hand, though.[ ]

A. might      

B. must      

C. can      

D. should

某人在失业以后因就业信息不灵而暂时找不到工作种失业是自愿失业。