This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
[{'content': 'In normal distribution which have same value \nSelect and explain. \nA. SD and mean, B. SD and mode, C. Mode and mean, D. SD and median', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ref:Park's Textbook of Preventive and Social Medicine 25th Ed", 'role': 'assistant'}]