Seligman Strapped Dogs into Harnesses and Gave Them Electric Shocks

Seligman strapped dogs into harnesses and gave them electric shocks that they couldn't escape from.When he next put them in cages from which they could escape shocks,what did they do?

A) They overcame their learned helplessness.
B) They were passive and did not try to escape.
C) They quickly learned how to activate the escape mechanism.
D) They frantically tried to escape,but most were unsuccessful.