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: Social & Preventive Medicine
[{'content': 'Which personality type is believed to be more prone to coronary hea disease? \nSelect and explain. \nA. Type A, B. Type B, C. Type C, D. All are equally prone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Type A personality is associated with competitive drive, restlessness, hostility and are more prone to coronary hea disease. Ref: Park 21st edition, page 341.', 'role': 'assistant'}]