求助一道语法题~~~

The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than 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

正确答案选A，我错选了E，求大神指点E的错误之处。

还有，我觉得A greater than后面是省略了the numbers吗？