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: Medicine
[{'content': 'Plasmapharesis is used in all of the following except- \nSelect and explain. \nA. Myaesthenic crisis, B. Cholinergic crisis, C. Gullian Barre syndrome, D. Polymyositis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]