Thorndike Set Up Experiments in Which Cats Escaped from Puzzle

Thorndike set up experiments in which cats escaped from puzzle boxes. He argued that learning by the cats was not due to insight or understanding, because if it were

A) the cats would have learned more slowly than they did.
B) the cats should have escaped on the first trial.
C) speed of escaping would have increased suddenly on some trial and remained fast on later trials.
D) reinforcement would not have been necessary.