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.
Seeking to decrease the incidence of tooth decay, the American Dental Association is to spend $45 million over the next seven years promoting good dental hygiene.（）
A. the American Dental Association is to spend $45 million over the next seven years promoting good dental hygiene
B. the American Dental Association will spend $45 million over the next seven years to promote good dental hygiene
C. over the next seven years the American Dental Association is to spend $45 million promoting good dental hygiene
D. good dental hygiene will be promoted by the American Dental Association, which is spending $45 million over the next seven years
E. $45 million will be spent by the American Dental Association over the next seven years on the promotion of good dental hygiene
