Therapists face many challenges when counseling married couples. Compared with couples where ...

Therapists face many challenges when counseling married couples. Compared with couples where infidelity is not an issue, how do couples dealing with infidelity fare in couples therapy?
 
  a. Because they initially show more distress than faithful couples, they do not fare as well in therapy.
  b. Although they initially show more distress than faithful couples, they fare as well in therapy.
  c. They show similar levels of distress as faithful couples but fare worse in therapy.
  d. They show similar levels of distress as faithful couples but benefit more from therapy.