The cottontail rabbit population in Orange County, California, has increased unchecked in recent years as a result of the removal of the native fox population and the clearing of surrounding woodlands.

(A) years as a result of the removal of
(B) years as a result of removing
(C) years, resulting from the removing of
(D) years, which is result of removing
(E) years, which is a result of the removal

OA is A

OA says A but I'm having a rethink on why option B should be correct. Can an Expert pour thoughts on this? Thanks