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': 'Which of the following is used in recombinant DNA technology? \nSelect and explain. \nA. Restriction endonucleases, B. PCR, C. Reverse transcriptase, D. FISH', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]