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Mayor of Plainsville: In order to help the economy of Plainsville, I am using some of our tax revenues to help bring a major highway through the town and thereby attract new business to Plainsville.

Citizens' group: You must have interests other than our economy in mind. If you were really interested in helping our economy, you would instead allocate the revenues to building a new business park. Since it would bring in twice the business that your highway would.

4. Which one of the following principles, if accepted, would most help the citizens' group to justify drawing its conclusion that the mayor has in mind interests other than Plainsville's economy?

(A) Anyone really pursuing a cause will choose the means that that person believes will advance the cause the farthest.

(B) Any goal that includes helping the economy of a community will require public revenues in order to be achieved.

(C) Anyone planning to use resources collected from a group must consult the members of the group before using the resources.

(D) Any cause worth committing oneself to must include specific goals toward which one ca work.

(E) Any cause not pursued by public officials, if it is to be pursued at all, must be pursued by members of the community.

答案 a

能帮我推理一下么？