Alex and Faith, who attend the same college, sometimes have sex with each other. When people ask if ...

Alex and Faith, who attend the same college, sometimes have sex with each other. When people ask if they are a couple Alex and Faith insist that they are just friends. Alex and Faith _________
 
  A) are more likely than people in romantic relationships to practice safer sex techniques.
  B) by definition have no interest in eventually transitioning to a more stable romantic relationship.
  C) likely will have fewer sexual partners in their lives than people who do not engage in this sexual interaction pattern.
  D) are engaging in a highly unusual behavior for college students.