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': 'ORF stands for: \nSelect and explain. \nA. Open reading frame, B. Oncogene removing frequency, C. Oil related fraction, D. Open reduction fracture', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]