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: Forensic Medicine
[{'content': 'Rate of involution uterus following delivery: FMGE 09, 11 \nSelect and explain. \nA. 1 cm/day, B. 1.25 cm/day, C. 2.25 cm/day, D. 2.5 cm/day', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. 1 cm/day', 'role': 'assistant'}]