With no explanation, chose the best option from "A" or "B". Dave is at home when his wife Cindy comes back from being out with friends and admits to him she just slept with someone else. Dave wants to react to Cindy's admission.

A: Dave tells Cindy that she needs to pack her things and move out as soon as possible as their relationship is finished.
B: Dave tells Cindy that it's OK, and she just made a mistake, and he's sure she won't do it again.
A.