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 does not induce microsomal enzymes? \nSelect and explain. \nA. Cimetidine, B. Griseofulvin, C. Rifampicin, D. Phenobarbitone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: - Among the given options, only Cimetidine is a microsomal enzyme inhibitor.', 'role': 'assistant'}]