6. The Transit Authority’s proposal to increase fares by 40 percent must be implemented. Admittedly, this fare increase will improve a hardship on some bus and subway riders. But if the fare is not increased, service will have to be cut severely and that would result in an unacceptably large loss of ridership.
The passage employs which one of the following argumentative strategies?
(A) It offers evidence that the recommended course of action would have no undesirable consequences.
(B) It shows that a proponent of any alternative position would be force into a contradiction.
(C) It arrives at its conclusion indirectly by providing reasons for rejecting an alternative course of action.
(D) It explains why the recommended course of action would not be subject to the objections raised against the alternative.
(E) It justifies the conclusion by showing that such a course of action has proven effective in the past
这题答案是C，为啥B不对啊，请教
(B) It shows that a proponent of any alternative position would be force into a contradiction.
Just one alternative is offered in the passage, where ANY comes from, let alone the author's debutal to those other alternatives.
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