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: Biochemistry
[{'content': 'Reverse transcriptase is \nSelect and explain. \nA. DNA dependent RNA polymerase, B. RNA dependent DNA polymerase, C. DNA dependent DNA polymerase, D. RNA dependent RNA polymerase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]