Based on Current Evidence, a Supercluster Is Most Likely to Have

Based on current evidence, a supercluster is most likely to have formed in regions of space where .

A) supermassive black holes were present in the very early universe
B) the acceleration of the expansion was proceeding faster than elsewhere
C) there was an excess concentration of hydrogen gas when the universe was very young
D) the density of dark matter was slightly higher than average when the universe was very young