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
[{'content': 'Obsessive personality disorder is also called: \nSelect and explain. \nA. Anankastic personality disorder, B. Dissocial personality disorder, C. Eccentric personality disorder, D. Histrionic personality disorder', 'role': 'user'}, {'content': "Answer: A \nExplanation: Obsessive-compulsive personality disorder (OCPD), as defined by the current version of DSM-5, and termedanankastic personality disorder in the ICD-10. Pre occupation with rules and regulations Perfection that slows them down Stubborn and inflexible Impoant to work, no time for leisure activities Formal, don't like humor No obsessions or compulsions", 'role': 'assistant'}]