GMAT Sentence Correction

Sentence Correction is the most "math-like" question type in the Verbal - speed is of the essence, and the best way to gain speed is to exploit the answer choices. The answer set below presents a typical structure.
Of all the possible disasters that threaten American agriculture, the possibility of an adverse change in climate is maybe the more difficult for analysis.
(A) is maybe the more difficult for analysis
(B) is probably the most difficult to analyze
(C) is maybe the most difficult for analysis
(D) is probably the more difficult to analyze
(E) is, it may be, the analysis that is most