Molly attempts to condition her puppy to greet her when she enters the house. She repeatedly pairs her entry to the house with a treat for the puppy. The puppy eventually acquires this ability, and Molly realizes how irritating it is for the puppy to run up to her every time she enters the house. She attempts to make the puppy stop, and eventually the puppy no longer feels motivated to greet her when she enters the house. The puppy no longer greeting her when she enters the house is an example of ________.

A) acquisition
B) conditioning
C) extinction
D) learning