[求助]一道lsat题，恭请牛人出手/LSAT-5-6-20

20. Politician: Homelessness is a serious social problem, but further government spending to provide low-income housing is not the cure for homelessness. The most cursory glance at the real-estate section of any major newspaper is enough to show that there is no lack of housing units available to rent. So the frequent claim that people are homeless because of a lack of available housing is wrong.

That homelessness is a serious social problem figures in the argument in which one of the following ways?

(A) It suggests an alternative perspective to the one adopted in the argument.

(B) It sets out a problem the argument is designed to resolve.

(C) It is compatible either with accepting the conclusion or with denying it.

(D) It summarizes a position the argument as a whole is directed toward discrediting.

(E) It is required in order to establish the conclusion.

答案为什么是C呢，不太明白why? accept and denying 为什么会同时出现呢？请指教。