27. According to the passage, which of the following statement is INCORRECT?
(A) We can infer that the oxygen content in the cave is relatively low.
(B) It’s male cave mollies that use pores to find the larger mating partners.
(C) It’s possible for molly females to mate to death if they are not separated from males.
(D)Compared with the molly males not dwelling in the dark, those in caves are more sluggish.