This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
Slow pain in nerves is carried by 
Select and explain. 
A. a (alpha), B. b (delta), C. B, D. C
D: C
Answer: D: C 
Explanation: (D) C > Sense organs for pain are free nerve ending found in almost every tissue of the body> PAIN PATHWAY> VPN thalamus Ad(myelinated)... fast pain> DRG> C (unmyelinated)... slow pain dorsal root> Substance P is mediator of pain