GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - L7T7P77KP77AI7TFJ

The passage cites which of the following as evidence undermining the theory presented in the second sentence? A. a discrepancy between the number of mergers between single stars in certain low-density globular clusters and that in other low-density globular clusters B. a discrepancy between the heat and mass of blue stragglers formed by one type of process and the heat and mass of blue stragglers formed by another type of process C. a discrepancy between the frequency of star mergers in low-density globular clusters and those in high-density globular clusters D. a discrepancy between the amount of heat and mass of ancient single stars and that of blue stragglers E. a discrepancy between the number of mergers between single stars in certain star clusters and the number of blue stragglers in those clusters