Taste Aversions Are a Type of Classical Conditioning, and If

Multiple Choice

Taste aversions are a type of classical conditioning, and if there is a long delay between the CS and US, conditioning is usually prevented. The fact that people and animals can develop taste aversions, even though sickness occurs long after eating, indicates that

A) taste aversions are really a type of systematic desensitization.
B) taste aversions can be unlearned as well.
C) there is a biological preparedness to associate sickness with any food eaten earlier, which protects us from eating unhealthy foods.
D) there is less aversion associated with the actual sickness than with whatever caused the sickness in the first place.