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': 'Fouth stage of labour i.e. observation of patient after delivery of placenta is defined as period of___________after delivery: \nSelect and explain. \nA. 1 hour, B. 2 hour, C. 3 hour, D. 4 hour', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 1 hour', 'role': 'assistant'}]