Jeramy's Cat Always Purrs When She Eats Her Food

Multiple Choice

 Jeramy's cat always purrs when she eats her food. Each day, Jeramy would use the can opener to open the cat food and after a while, he found that his cat would purr each time he used the can opener even if he didn't give her food. What happened?

A) His cat has amnesia.
B) His cat learned via classical conditioning.
C) His cat learned via instrumental conditioning.
D) His cat has developed LTD.