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: Microbiology
[{'content': 'The role of plasmids in conjugation was first described by Lederberg and Tatum(46) in - \nSelect and explain. \nA. H.influenzae, B. Corynebacterium, C. Pseudomonas, D. Esch.Coli', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]