According to the Factors Associated with Increased Risk of Divorce

According to the factors associated with increased risk of divorce, which of the following couples is most likely to get a divorce?

A) Julie and Carlo have both finished college and have jobs.
B) Harry and Charlene have just graduated from high school, and Charlene is four months pregnant.
C) Greg and Sue got married just after junior college but are planning to postpone having children until . they finish college and work for a few years.
D) All are equally likely to get a divorce.