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 irrigant is used during opening of a tooth with acute pulpal abscess? \nSelect and explain. \nA. Normal saline, B. Hydrogen peroxide, C. Sodium hypochlorite, D. EDTA', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]