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
Stunned pulp means 
Select and explain. 
A. Stunning appearance on radiograph, B. Pulp not capable of positive response to tooth vitality tests for 6-8 weeks after injury, C. Necrotic pulp, D. Normal pulp
B: Pulp not capable of positive response to tooth vitality tests for 6-8 weeks after injury
Answer: B: Pulp not capable of positive response to tooth vitality tests for 6-8 weeks after injury 
Explanation: None