A Study Was Conducted with a Large Group of Unhappily

A study was conducted with a large group of unhappily married people who were interviewed twice over five years. The researchers asked, "Are those who divorced during this five-year period happier than those who stayed married?" They found:

A) on average, the people in the divorced group were no happier than those who remained married.
B) women who divorced were happier, but men who divorced were not.
C) that one-quarter of those who stayed married over the five years reported that their marriages had improved.
D) those people who were among the "happier" of the unhappy marriages at the time of the first interview reported the most dramatic turnaround.
E) divorce greatly improved stress levels.