Rusbult's (1983) Research on College-Age Dating Couples Showed That Rewards

Rusbult's (1983) research on college-age dating couples showed that rewards played a role in determining satisfaction __________ and that costs played a role __________.

A) only in the first few months; always
B) throughout the relationship; only in the first few months
C) only after the first few months; always
D) throughout the relationship; only after the first few months