A wildlife expert predicts that there introduction of the caribou into northern Minnesota would fail if the density of the timber wolf population in that region is more numerous than one wolf for every 39 square miles.
(A) would fail if the density of the timber wolf population in that region is more numerous
(B) would fail provided the density of the timber wolf population in that region is more
(C) should fail if the timber wolf density in that region was greater
(D) will fail if the density of the timber wolf population in that region is greater
(E) will fail if the timber wolf density in that region were more numerous

I will post the OA later.