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(A) as gasoline engines with comparable size do, and they emit far less carbon dioxide and other greenhouse gases, which have been determined to be contributing
(B) as gasoline engines of comparable size do, emitting far less carbon dioxide and other greenhouse gases, which they have determined to contribute
(C) than do gasoline engines of comparable size, and they emit far less carbon dioxide and other greenhouse gases, which have been determined to contribute
(D) than do gasoline engines of comparable size, and emitting far less carbon dioxide and other greenhouse gases, which have been determined as contributors
(E) than gasoline engines whose size is comparable, and they emit far less carbon dioxide and other greenhouse gases, which have been determined as contributing
OA C
Source: GMAT Prep













