Based on What You've Read About Cohabitation in This Chapter,why

Based on what you've read about cohabitation in this chapter,why might longtime cohabiters with no plans to marry prefer cohabitation?

A) They do not want to commit to their partner.
B) They consider cohabitation to be edgy and boundary-breaking.
C) They have unease about the meanings associated with marriage.
D) They think that marriage will have no impact on their relationship.