After a Painful Experience,Sebastien Cringes Every Time He Hears a Dentist's

Multiple Choice

After a painful experience,Sebastien cringes every time he hears a dentist's drill,even when he is sitting in the waiting room of his dentist's office.What term applies to Sebastien's cringing in the waiting room in this example

A)  conditioned stimulus 
B)  unconditioned response 
C)  unconditioned stimulus 
D)  conditioned response