Which Situation Is an Example of Classical Conditioning

Which situation is an example of classical conditioning?

A) Logan listens to a certain song regularly while having sex, and later becomes aroused when he hears the song at a party.
B) Amelia's former sexual partner loved eating sushi; she now dislikes sushi.
C) Sofia will not massage her partner's back because she did not get thanked the last time.
D) Anthony sees an attractive person and becomes sexually aroused.
E) As Luciana spends more time with a classmate, she becomes more sexually attracted to that person.