Ryan and Ben are best friends. Ryan regularly runs marathons and is a member of the Marathon Runners Club at his university. Ben also wants to join the club, but he is not a very strong runner. Ben decides to start running every day so that he can participate in marathons and become a member of the club. Given this information, the Marathon Runners Club can be categorized as a(n) _____. a. interest reference group b. primary reference group c. aspirational reference group d. nonaspirational reference group