Which one of the following statements is supported by the results of the "better test" discussed in the last paragraph of the passage? A. The test confirms the three classical theories discussed in the passage. B. The test provides no basis for deciding among the three classical theories discussed in the passage. C. The test shows that it is impossible to apply any theory of social movements to the civil rights movement. D. The test indicates that press coverage of the civil rights movement was biased. E. The test verifies that the civil rights movement generated socioeconomic progress.