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: Dental
[{'content': 'Formocresol saturated cotton pellet is placed over the\namputated pulp stumps for: \nSelect and explain. \nA. 1 minute, B. 2 minutes, C. 4 minutes, D. 5 minutes', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]