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: Physiology
Weber Fechner law is related with : 
Select and explain. 
A. Amplitude, B. Surface area, C. Number of sensory fibre involvement, D. Stimulus discrimination
D: Stimulus discrimination
Answer: D: Stimulus discrimination 
Explanation: D i.e. Stimulus discrimation