Letter to the editor: You have asserted that philanthropists want to make ... ...

Letter to the editor: You have asserted that philanthropists want to make the nonprofit sector as efficient as private business in this country. Philanthropists want no such thing, of course. Why would anyone want to make nonprofits as inefficient as Byworks Corporation, which has posted huge losses for years? The reasoning of the argument in the letter is most vulnerable to criticism on the grounds that the argument
(A) draws a conclusion about what ought to be the case from premises that are entirely about what is the case
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in June 2013 LSAT (PT69): Logical Reasoning B