Roxanne and Paul Have Been Married for Nine Years but Have

Roxanne and Paul have been married for nine years but have recently started having marital problems. Indeed, their relationship has taken a real downturn and seems to be in the process of deteriorating. Based on research, what is the likelihood of their relationship getting back on track?

A) Generally speaking, their relationship is unlikely to get back on track, as it is unusual for a couple to restore a healthy relationship once it has begun a downward spiral.
B) Generally speaking, their relationship is still very likely to get back on track, as it is perfectly normal for couples to cycle in and out of "crisis periods."
C) Their relationship is only likely to get back on track if they have children.
D) Their relationship is only likely to get back on track if they enter therapy.