This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNA Replication , Subject name: Biochemistry
[{'content': 'DNA replication occurs in which phase of cell cycle - \nSelect and explain. \nA. S phase, B. Gl, C. G2, D. M', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., S phase o Repeat from previous sessions.", 'role': 'assistant'}]