This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Personality Disorders, Subject name: Psychiatry
A 43 year old principal of a medical college comes for psychiatric evaluation. He repos that throughout his life he has worked hard and has lived a disciplined life. He always follows all the rules and does the 'right thing', however no one really likes him. The principal appears to have which of the following personality: 
Select and explain. 
A. Schizoid, B. Paranoid, C. Anankastic, D. Borderline
C: Anankastic
Answer: C: Anankastic 
Explanation: Obsessive compulsive personality disorder / Anankastic PD - Preoccupied with rules and regulation Perfectionism that slows them down Stubborn and inflexible No time for leisure and no sense of humour No obsession and compulsion seen in anankastic