This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Microbiology
[{'content': 'Most of the drug resistance occurs due to:(1996) \nSelect and explain. \nA. Transduction, B. Translation, C. Mutation, D. Conjugation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans: d', 'role': 'assistant'}]