How Does Sexual Satisfaction Within a Relationship Change Over Time

How does sexual satisfaction within a relationship change over time?

A) Most people are more sexually satisfied over time than at the beginning of the relationship.
B) Very few people are sexually satisfied by the third year of a relationship.
C) People who believe in sexual soulmates are more likely to feel satisfied.
D) People who believe sexual satisfaction requires effort and hard work are more likely to feel satisfied.
E) People who continue to have sex frequently are more likely to feel bored by their sexual partner.