Which of the Following Is True of Ivan Pavlov's Experiment

Multiple Choice

Which of the following is true of Ivan Pavlov's experiment on classical conditioning?

A) The bell was a neutral stimulus before it was paired with the meat powder.
B) The dog's salivation in response to the bell was an unconditioned response.
C) The bell was a conditioned stimulus before it was paired with the meat powder.
D) The dog's salivation in response to the meat powder was a conditioned response.