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': 'Multiple drug resistance of bacteria depends on which of the following: \nSelect and explain. \nA. Resistance transfer factor (RTF), B. Colicigenic factor (Col), C. Fertility factor (F +), D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]