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? ["It is possible to determine the amount of matter in our galaxy without relying on Einstein's theory.", "The failure to find all of the matter predicted by Einstein's theory should lead us to abandon it.", "Einstein's theory has achieved many successes.", 'Scientists are able to accurately judge the amount of matter that has been found in our galaxy.']