This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Bacteriophages are mostly needed for - \nSelect and explain. \nA. Bacterial identification, B. Epidermiologically, C. As antibacterial agent, D. Conversion propey in bacteria', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bacteriophages are needed for bacterial identification REF:<\\p> MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.457', 'role': 'assistant'}]