
Passage: It is difficult to keep the depths of the wound free from bacterial infection, and even highly effective antibiotics cannot kill the bacteria that live in the depths of the wound. However, many doctors bandage the wound with sweet substances such as sugar to remove bacteria from the depths of the wound.
Question: Which of the followings, if true, is most helpful in explaining why sucrose kills bacteria deep in the wound?
A. A.Bacteria in the depths of the wound thrive in a moist environment, while sucrose has the effect of dehydration.
B. B.Many kinds of bacteria feed on sucrose and multiply rapidly when they get sugar.
C. C.Some foods containing sucrose can weaken the effect of some antibiotics.
D. D.Highly effective antibiotics have only recently been developed, and the use of sucrose to treat wounds has a long history.
Answer: