Klein: The fact that the amount of matter that we have found in our galaxy ... ...

Klein: The fact that the amount of matter that we have found in our galaxy is only one-tenth of what Einstein’s theory predicts gives us good reason for abandoning his view.

Brown: Given the great successes of Einstein’s theory, it would be better to conclude that most of the matter in our galaxy has not yet been found.

On the basis of their statements, Klein and Brown are committed to disagreeing over the truth of which one of the following statements?


(A)  Scientists have found only one-tenth of the matter that Einstein’s theory predicts. 

(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in PT71 (Dec 2013): Logical Reasoning B