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': 'Pearsonian measure of skewness- \nSelect and explain. \nA. Mode - Mean\\/SD, B. Mean - Mode\\/SD, C. SD\\/ Mode - Mean, D. Mean - Mode\\/ SD', 'role': 'user'}, {'content': 'Answer: B \nExplanation: .', 'role': 'assistant'}]