Sherecce and Marin Both Have Social Anxiety Disorder

Sherecce and Marin both have social anxiety disorder.Sherecce's fears include public speaking and speaking up in meetings.Marin's fears include public speaking, meeting new people, and eating in public.Who is more likely to develop a substance abuse problem, and why?

A) Sherecce, because her anxiety is more pervasive.
B) Marin, because he has more social fears.
C) Neither, because neither quantity nor pervasiveness of social fears predicts substance use.
D) Marin, because his anxiety is more debilitating.