请教一道语法

lulutingyu

The gyrfalcon, an Arctic bird of prey, has survived a close brush with *****when the use of DDT was sharply restricted in the early 1970's.      
(A) extinction; its numbers are now five times greater than
(B) extinction; its numbers are now five times more than
(C) extinction, their numbers now fivefold what they were
(D) extinction, now with fivefold the numbers they had
(E) extinction, now with numbers five times greater than  
B 为什么不对？

gmat740740

number只能用great修饰 不能用more； prep上有道差不多的~

hanlei84921

形容gyrfalcon可以用more ，形容 gyrfalcon的number用great

Fuckitup

答案是不是E？

lulutingyu

答案是  A

eeheaven

谁能告诉我这题为毛把 its number were省略了了？？？？