求助prep上的一题~!

leelaugh

In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.

(A) which is a substance that promotes blood clotting, but not seriously interfering



(B) a substance that promotes blood clotting, but not seriously interfering



(C) a substance that promotes blood clotting, but does not seriously interfere



(D) which is a substance to promote blood clotting, but does not seriously interfere

(E) which is a substance that promotes blood clotting, but not a serious interf18erence
选D的话会不会同which prevents clotting更加平行一点???

enkyklios

D不好but会和 suffices to block production of thromboxane,平行