Question ID:PT34 S2 Q3 Passage:Restaurant manager:  In response to requests from our patrons for vegetarian main dishes, we recently introduced three:  an eggplant and zucchini casserole with tomatoes, brown rice with mushrooms, and potatoes baked with cheese.  The first two are frequently ordered, but no one orders the potato dish, although it costs less than the other two.  Clearly, then, our patrons prefer not to eat potatoes. Stem:Which one of the following is an error of reasoning in the restaurant manager's argument? Correct Answer Choice:EChoice A:concluding that two things that occur at the same time have a common cause Choice B:drawing a conclusion that is inconsistent with one premise of the argument Choice C:ignoring possible differences between what people say they want and what they actually choose Choice D:attempting to prove a claim on the basis of evidence that a number of people hold that claim to be true Choice E:treating one of several plausible explanations of a phenomenon as the only possible explanation