This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Social & Preventive Medicine
[{'content': 'The area under a normal distribution curve for SD of 2 is \nSelect and explain. \nA. 65%, B. 75%, C. 95%, D. 99%', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (C) 95% # Normal distribution: In a normal curve the area between one standard deviation on either side of the mean (x+1s) will include approximately 68% of the values in the distribution> Area between two standard deviations on either side of the mean (x + 2s) will cover most of the values i.e., approximately 95% of the values, and> Area between (x + 3s) will include 99.7% of the values.', 'role': 'assistant'}]