In Classical Conditioning, Spontaneous Recovery Refers to

In classical conditioning, spontaneous recovery refers to

A) the return of a conditioned response that had been extinguished, after a period of non-exposure to the conditioned stimulus.
B) a loss of responding that results from the repeated presentation of a conditioned stimulus without an unconditioned stimulus.
C) learning that an event signals the absence, or non-occurrence, of the unconditioned stimulus.
D) a procedure which uses an established conditioned stimulus to condition a response to a second, neutral stimulus.