How Is Conditioned Taste Aversion an Exception to the General

How is conditioned taste aversion an exception to the general principles of classical conditioning?

A) Conditioned taste aversions require a longer interval between the CS and the response than do most CRs.
B) Conditioned taste aversions require more trials to acquire than do most CRs.
C) Conditioned taste aversions require a shorter interval between the CS and the response than do most CRs.
D) Conditioned taste aversions often require only a single CS-US pairing for their acquisition.