The United States petroleum industry’s coste

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The United States petroleum industry's cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the decade.(A) The United States petroleum industry's cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the decade.
(B) The United States petroleum industry's cost by the end of the decade to meet environmental regulations is estimated at ten percent of the price per barrel of refined petroleum.
(C) By the end of the decade, the United States petroleum industry's cost of meeting environmental regulations is projected at ten percent of the price per barrel of refined petroleum.
(D) To meet environmental regulations, the cost to the United States petroleum industry is estimated at ten percent of the price per barrel of refined petroleum by the end of the decade.
(E) It is estimated that by the end of the decade the cost to the United States petroleum industry of meeting environmental regulations will be ten percent of the price per barrel of refined petroleum.
[spoiler]what is the difference b/w C and E
according to me C is concise while E is wordy
pls explain if i am worng[/spoiler]
Source: — Sentence Correction |

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by Jim@StratusPrep » Tue Apr 17, 2012 7:30 am
This gets into a topic called order of relevance. Basically, you should put the most important information first. Here it is the cost to the United States petroleum industry (cost comes first) not the United States petroleum industry's cost. Similarly, because of the way C is structured it puts the future cost projection with a present tense verb. This makes understanding the sentence difficult.
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