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: Surgery
Fibres which transmit fast pain from pulp are 
Select and explain. 
A. Aα, B. Aγ, C. Aβ, D. Aδ
D: Aδ
Answer: D: Aδ 
Explanation: None