This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Normal waist-hip ration of a female is below? \nSelect and explain. \nA. 0.7, B. 0.8, C. 0.9, D. 1', 'role': 'user'}, {'content': "Answer: B \nExplanation: park's textbook of preventive and social medicine 23rd edition. *waist -hip ratio in females - <0.85 and in males -< 1", 'role': 'assistant'}]