This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins and Minerals, Subject name: Biochemistry
[{'content': 'Biotin deficiency is characterized by the following except: \nSelect and explain. \nA. Muscular pain, B. Anaemia, C. Nausea, D. Dermatitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B Harper, 25th ed, p. 635', 'role': 'assistant'}]