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: Pharmacology
[{'content': 'Which of the following Anti-TB drug can cause "Steven Johnson Syndrome"? \nSelect and explain. \nA. PAS, B. Thioacetazone, C. Ethionamide, D. Isoniazid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Thioacetazone is a bacteriostatic drug which can lead to Steven Johnson Syndrome, hypersensitivity and bone marrow suppression. It should not be used in cases of TB with HIV coinfection.', 'role': 'assistant'}]