During a Debate About Cohabitation, Corey States That Cohabitation Is

During a debate about cohabitation, Corey states that cohabitation is likely to affect children adversely.However, Karl states that cohabitation has certain positive effects on children.Which of the following is an accurate statement that strengthens Karl's argument?

A) Laws in the United States clearly specify a cohabitant's responsibilities and rights where it concerns children.
B) Even at lower economic levels, children are likely to benefit from having two parents rather than living with single mothers.
C) Compared with married couples, cohabitants-both in the United States and Europe-have a better quality of relationship.
D) Cohabitation is higher among heterosexuals than homosexuals.