This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
All are cluster A personality disorders except ? 
Select and explain. 
A. Paranoid, B. Borderline, C. Schizoid, D. Schizotypal
B: Borderline
Answer: B: Borderline 
Explanation: Ans. is 'b' i.e., Borderline Personality disorders Clustor A : Paranoid, Schizoid, Schizotypal. Clustor B : Antisocial (Dissocial), Histrionic, Narcissistic, Borderline. Clustor C : Anxious (avoidant), Dependent, obsessive - compulsive (anankastic).