This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Bp of 50 years old man is 144/96 mmHg. He belongs to \nSelect and explain. \nA. HTN stage-1, B. HTN stage-2, C. Normal, D. Pre-HTN', 'role': 'user'}, {'content': 'Answer: A \nExplanation: He belongs to Hypeension stage I Ref : Park 23rd edition Pgno : 373', 'role': 'assistant'}]