Which of the Following Is an Example of the Mere-Exposure

Which of the following is an example of the mere-exposure effect?

A) After being together a storm shelter for several hours during a tornado, Ross and Rachel became romantically attracted to each other.
B) Liane assumes that because Boyd is handsome, he must be popular and sociable.
C) Alain and Carole are going together and are both very attractive.
D) Brian sees Suzanne at the library often and begins to like her