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': 'All of the following is used in pleurodesis except \nSelect and explain. \nA. C. parvum, B. Clotrimazole, C. Mustine Hcl, D. Tetracycline', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]