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': 'Correlation in height & weight are measured by? \nSelect and explain. \nA. Coefficient of variation, B. Range of variation, C. Correlation coefficient, D. None', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Correlation Coefficient", 'role': 'assistant'}]