We're all ready to put it into operation, _____, we're going to take action as fast as possible. [ ]

A. on the whole

B. in general

C. in conclusion

D. in other words

某派出所合同制民警石某在夜间巡逻，看阮某形迹可疑，怀疑其为小偷，即把其叫到所里讯问。阮某否认偷了东西，石某便把阮某捆起来毒打，迫使其招认，结果造成阮某伤残。张某的行为构成何种犯罪

A．非法拘禁罪

B．刑讯逼供罪

C．故意伤害罪

D．刑讯逼供罪和故意伤害罪