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aceupgmat
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EPA 16 May 2005, 21:13
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Beginning in two years, in the areas of the United States that have not yet met the standards of the Environmental Protection Agency for carbon monoxide emissions, gasoline sold during the winter months must be oxygenated. There is no doubt that the oxygenated gasoline will reduce the amount of carbon monoxide discharged from vehicle tailpipes, but the benefit will be short lived. Older vehicles emit more carbon monoxide than newer ones. As older vehicles are replaced by newer ones, the same level of reduction in carbon monoxide will be achieved without any change in the content of gasoline.

Which of the following, if true, would undermine the argument above?

I. According to current estimates, petroleum refiners do not have the capacity to meet the demand for oxygenated gasoline projected by the EPA under its new regulations.
II. Carbon monoxide build-up is cumulative, and once created, years must pass before the delirious effects have disappeared.
III. Requiring the use of oxygenated gasoline in newer cars will reduce carbon monoxide emissions more than allowing regular gasoline to be used in new cars.

(A) I Only
(B) III Only
(C) I and II only
(D) II and III only
(E) I, II and III only.

Source: ARCO



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amit_drummer
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EPA 16 May 2005, 21:42
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D it is
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amit_drummer
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EPA 16 May 2005, 21:43
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D it is.
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kamal_tejnani
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EPA 16 May 2005, 22:20
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The writer is agreeing that the carbon monoxide emission must be controlled,
however he is saying that nothing needs to be done about it since older vehicles
will replace newer ones, and that will take care of the problem.

1) does not have anything to do with this argument
2) goes against what the author thinks/assumes in that allowing older vehicles to
temporarily emit larger amounts of carbon monoxide in the present, will
not have an effect in the future.
3) is very relevant to his argument.

hence D seems to be correct.



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