Which Diagnosis Meets Criteria for Admission to a Co-Occurring Inpatient

Which diagnosis meets criteria for admission to a co-occurring inpatient unit?

A) Bipolar disorder, manic phase, patient has abused alcohol daily to self-medicate
B) Undifferentiated schizophrenia and hallucinations of angels playing harps
C) Major depression, suicidal intent, and a highly lethal suicide plan
D) Anorexia nervosa and 30% underweight