Which best explains why many considered Jackie Robinson a curious choice for Dodgers owner, Branch Rickey, to sign as the first African American MLB baseball player?

Jackie was a mediocre athlete.
Branch Rickey was more interested in several of Jackie's team mates.
Jackie had a bad temper, which many believed would only increase the controversy over him joining the league.
Jackie was twenty-seven years old at the time, which was considerably older than most MLB prospects.