What Is Rosalie Rayner's Role in the History of Psychology

What is Rosalie Rayner's role in the history of psychology?

A) She was a student assistant who helped Pavlov with his experiments on classical conditioning in animals.
B) She was a colleague who helped Skinner with his experiments on operant conditioning in animals.
C) She developed a cognitive theory of classical conditioning.
D) She created the puzzle box used by Edward Thorndike.
E) She was a student assistant who helped Watson with his experiments on classical conditioning in humans.