This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Membrane and transpo protiens, Subject name: Physiology
[{'content': 'The X-linked Charcot-Marie-Tooth disease results from a defect of: \nSelect and explain. \nA. Connexin 30, B. Connexin 32, C. Connexin 36, D. Connexin 40', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Charcot Marie Tooth disease is a peripheral neuropathy. It results from defective connexin-32 that forms gap junctions between adjacent Schwann cells. Defect in connexin 40 - Idiopathic atrial fibrillation.', 'role': 'assistant'}]