The answer would be B. patience to endure the hunt, then his integrity to admit his error.
For his third trial, Heracles was made to capture the Ceryneian Hind, a red female dear in the city of Ceryneia. This dear was special in that it was sacred to the goddess of the moon, Diana, so Heracles could not kill or harm the dear. Heracles chased after the dear for an entire year and he ending up shooting the dear with an arrow. Diana was mad, of course, but Heracles admitted his fault and that he had to do as the oracle said and obey the commands Eurystheus had given him.