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': 'Pharmacologic agent used for pulpotomy are all except: \nSelect and explain. \nA. Formocrsol., B. Laser., C. Collagen, D. Ferric sulphate.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pharnacologic agents which can be used for pulpotomy\xa0in primary teeth are:\n\nFormocresol\nGlutaraldehyde\nCalcium hy roxi\nCollagen\nFerric sulfatee\xa0\n\nNon-pharmacologic\xa0 agents\n\nElectrosurgery\nLaser therapy.', 'role': 'assistant'}]