Galton's Personal Conviction That Differences in Intellectual Ability Are Largely

Galton's personal conviction that differences in intellectual ability are largely innate arose in part because

A) in school he found himself easily surpassing other students who came from much more privileged backgrounds than himself.
B) in school he found that he could not compete successfully against the very top students, despite his own privileged background.
C) he observed that the top scientists tended to come from specific countries.
D) males tended to outperform females in academic tasks.