The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.
These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.
The medical board, concerned by the drop in insurance payments and the failure of the accounting department to obtain the anticipated funds, resolved to pursue legal action against the insurance company.（）
A. concerned by the drop in insurance payments and the failure of the accounting department to obtain
B. concerning the drop in payments by insurance and the failure of the accounting department to obtain
C. because of its concern for the dropping insurance payments and the accounting department’s failure at obtaining
D. in its concern that the drop in insurance payments and the failure of the accounting department to obtain
E. being concerned about the drop in insurance payments and the accounting department failing to obtain
