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': 'Tasks that involve exposure blood, body fluids or tissues are classified by OSHA regulations under category: \nSelect and explain. \nA. I, B. II, C. III, D. IV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]