According to research, couples who live together before marriage are more likely to get divorced, even after controlling for relevant variables. From an economic point of view, why might this be the case?

(A) Because the opportunity cost of seeking a more suitable partner is too high, so people just keep cohabiting. (B) Because those who cohabit before marriage are treating their partner like a car that should be test driven, instead of a human being who should be loved." (C) Because divorce is less expensive when the marginal benefit of divorce equals its marginal cost. (D) Because traditional religions prohibit cohabitation before marriage