From OG-251
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
Which choice is correct and why? I think all the “numbers” in the choices are wrong.