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': 'Which of the following is a contraindication for pulp\ncapping and pulpotomy: \nSelect and explain. \nA. Accidental exposure in a vital tooth, B. If there is inflammation of the radicular pulp and pain, C. Greatly curved and tortuous roots, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]