prep语法题不懂

luyiqing

164
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One automobile manufacturer has announced plans to increase the average fuel efficiency of its sport
utility vehicles by 25 percent over the next five years, amounting to roughly five miles per gallon, and
representing the first significant change in the fuel efficiency of any class of passenger vehicle in almost two
decades.
(A) amounting to roughly five miles per gallon, and representing
(B) amounting to roughly five miles per gallon, and it would represent
(C) an increase that would amount to roughly five miles per gallon and it would represent
(D) an increase that would amount to roughly five miles per gallon and would represent
(E) which is an increase amounting to roughly five miles per gallon, representing
解释中说A选项那个and之前不应该有逗号，否则就没有平衡物件时什么意思？

洛洛洛洛

因为A选项amounting和representing平行对称结构的话，不可以有逗号啊
这题是不是选D啊？
不记得这题了....