This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'Postural hypotension following Percutaneous transluminal coronary angioplasty (PTC \nSelect and explain. \nA. Autonomic dysfunction, B. Retroperitoneal bleeding, C. Entry site bleed, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) Autonomic dysfunction', 'role': 'assistant'}]