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: Medicine
[{'content': "Which of the following is/are features of polymerase used in recombinant synthesis: \nSelect and explain. \nA. Thermostable, B. Doesn't require primer, C. Unusually active, D. All", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Thermostable,', 'role': 'assistant'}]