下焦蓄血，少腹急结，小便自利，脉沉实或涩。治宜（）

A.桃核承气汤

B.下瘀血汤

C.抵当汤

D.血府逐瘀汤

_____ them is from Canada among the foreign students. [ ]

A. Both of

B. Neither of

C. All of

D. None of