GMAT Critical Reasoning (CR) | Re: In response to studies showing that accidents involving

A does not look good => E because in A, ones do not know if people continue to use the heaters.
D is wrong because of 2 reasons.
1/ the pattern of the question is not new. There are similar questions in which the answer is E, not D.
2/ the flow of the argument revokes the feeling that disposal income is not the central idea of the argument.

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