GMAT Sentence Correction (SC) | According to scientists at the University of California, the

６． According to scientists at the University of California, the pattern of changes that have occurred in human DNA over the millenniaindicate the possibility that everyone alive today might be descended from a single female ancestor who lived in Africa sometime between 140,000 and 280,000 years ago.

(A) indicate the possibility that everyone alive today might be descended from a single female ancestor who
(B) indicate that everyone alive today might possibly be a descendant