提问有点晚，但还是希望有人解答

In spite of continuing national trends toward increased consumption of specialty foods, agronomists in the Midwest foresee a gradual reversion to the raising of agricultural staples: feed corn and hard red wheat.
(A) a gradual reversion to the raising of agricultural staples
(B) that a gradual reversion back will feature the raising of agricultural staples
(C) a gradual reversion back to the raising of agricultural staples again
(D) a gradual reversion to raise agricultural staples
(E) a gradual reversion into the raising of agricultural staples

答案选a。我当时做的时候很快就把BCE，排除了。在A、D之间做出选择时，我觉得意思一样，但是D是动词形式更简洁，所以选了D。希望有n人可以告诉我为什么A比D好