Charles and Samantha Have Been Together as a Couple for Over

Charles and Samantha have been together as a couple for over two years. They are in love and both want to spend their lives together, possibly have children. Compared to couples in the same situation in 1981, which of the following is most likely to be true with respect to their decision to marry or live together in a common-law relationship?

A) They are two to three times as likely to choose to get married.
B) They are two to three times as likely to choose to live together.
C) They are slightly more likely to choose marriage.
D) They are slightly less likely to choose marriage.