Edward Tolman's Research on Latent Learning and Albert Bandura's Work

Edward Tolman's research on latent learning and Albert Bandura's work on modelling both demonstrate that:

A) classical and operant conditioning principles can be combined to explain behaviour.
B) learning only occurs when an organism is able to actually perform a behaviour.
C) negative reinforcers appear to be most responsible for the creation of cognitive maps.
D) learning can occur at a specific time yet not be displayed until later.