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: Gynaecology & Obstetrics
[{'content': 'Immediately following delivery the height of the uterus corresponds to............. weeks : \nSelect and explain. \nA. 32, B. 20, C. 25, D. 12', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 20', 'role': 'assistant'}]