One Study Indicated That There Is Quite a Bit of Diversity

One study indicated that there is quite a bit of diversity among teenage mothers in their transitions to adulthood. Which of the following is not one of the three groups of teen moms identified in Oxford and colleague's study?

A) a problem-prone group that had chronic problems in many areas of life
B) a psychologically vulnerable group that had high rates of mental health problems but were able to transition into adult roles with some degree of success
C) a group who seemed to develop "typically" and made successful transitions into adult roles
D) a group of individuals who bounced back and forth between identities and scored alarmingly low on all measures of "life satisfaction" (higher scores = more satisfaction)