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': 'Stunned pulp is \nSelect and explain. \nA. Pulp does not respond for 6-8 weeks after trauma, B. Gives stunning appearance on radiograph, C. Necrosed pulp, D. Hyperaemic pulp', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]