What Do the Renewal Effect and Spontaneous Recovery Both Suggest

Multiple Choice

What do the renewal effect and spontaneous recovery both suggest about extinction

A)  Extinction permanently erases conditioned responses. 
B)  Extinction suppresses, but does not erase, a learned association. 
C)  Extinction has a permanent effect only in animals, not in people. 
D)  Extinction alters the meaning of the unconditioned stimulus.