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: Anaesthesia
Allodynia is 
Select and explain. 
A. Feeling pain without stimulus, B. Feeling pain to a normal non painful stimulus, C. Both, D. None
B: Feeling pain to a normal non painful stimulus
Answer: B: Feeling pain to a normal non painful stimulus 
Explanation: None