What Was the Important Finding of Tolman's Latent Learning Experiments

What was the important finding of Tolman's latent learning experiments in which rats learned to run a maze

A) Rats that were never reinforced never learned to run the maze.
B) Rats that were never reinforced still learned to run the maze.
C) Rats that began to receive reinforcement halfway through the experiment rapidly matched the performance of rats that had been reinforced from the beginning of the experiment.
D) Rats that began to receive reinforcement halfway through the experiment never learned to run the maze.