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: Unknown
[{'content': 'The following measures are noted 1,2,3,4 and 6 during a study. True regarding the following observations: \nSelect and explain. \nA. Mean 3, B. Median 3, C. Mode 3, D. Standard deviation 1', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Refer: K. Park’s Textbook of Preventive and Social medicine, 24th edition, pg no: 884)\nMeasure of central tendency', 'role': 'assistant'}]