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: Dental
[{'content': 'Characteristics of normal distribution curve includes: \nSelect and explain. \nA. Bell Shaped, B. Symmetrical, C. Mean=median=mode=0, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Characteristics of normal distribution curve:\n\nBell Shaped\nSymmetrical\xa0\nAsymptotic – The two tails never touches the X-axis\nStandard deviation = variance\nMean=median=mode=0 (Coincide)', 'role': 'assistant'}]