What Did a Longitudinal Study Conclude About Couples Who Divorce

What did a longitudinal study conclude about couples who divorce?

A) only high-distress relationships ended.
B) couples who were married in their early twenties were the most likely to separate or divorce.
C) couples with high levels of negative affect stayed married for a longer time prior to divorcing than those who showed low levels of positive affect.
D) couples in both high-distress and low-distress relationships were represented in the group who separated or divorced.