Which study demonstrates how media images can affect relationships?

Which study demonstrates how media images can affect relationships?
 
  a. a study in which researchers compared how much time men and women in a relationship spent looking at specific magazine advertisements categorized as containing high, moderate, or mild sexual content
  b. a study in which researchers compared the sexual behaviors of college students out at a nightclub versus on-campus
  c. a study in which men rated themselves as less in love with their wives after viewing images of Playboy centerfolds
  d. a study in which Playboy centerfolds were hired by researchers to seduce married men