Louise and Ally are getting married.They walk into a bakery to inquire about ordering a cake.When the person assisting them learns that it is the two of them getting married she refuses to take their order.She informs them that she will not take their order because she does not believe in same-sex marriage.What is this an example of?

A) sexism
B) heterosexism
C) racism
D) classism

Heterosexism

A system of attitudes, bias, and discrimination in favor of opposite-sex sexuality and relationships.

Same-sex Marriage

The legal or formally recognized union of two individuals of the same gender, granting them the marital rights and responsibilities akin to those in opposite-sex marriages.

Bakery

A place where bread, cakes, cookies, and other baked goods are made or sold.