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': 'A 20 year old is found to have blood pressures of 134/86 and 136/89 on two separate occasions. He will be classified as: \nSelect and explain. \nA. Normotensive, B. High normal BP, C. Stage 1 hypeension, D. Stage 2 hypeension', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Classification of blood pressure measurements: Category Systolic BP Diastolic BP Normal <130 <85 High normal 130-139 85-90 Stage 1 hypeension 140-159 90-99 Stage 2 hypeension 160-179 100-109 Stage 3 hypeension >180 >110 Ref: Park 21st edition, page 344.', 'role': 'assistant'}]