What Did Seligman Find by Studying Dogs Exposed to Uncontrollable

What did Seligman find by studying dogs exposed to uncontrollable shock?

A) Seligman found that the exposure to the shock altered the level of brain chemicals known to be involved in depression.
B) Seligman found that uncontrollable shock led the dogs to behave much like depressed humans.
C) Seligman demonstrated that dogs can get depressed.
D) Seligman found that the dogs became aggressive.