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: Pathology
Pain due to stimulus non- painful stimulus that does not normally produce pain is called: 
Select and explain. 
A. Allodynia., B. Hyperalgesia., C. Hyperasthesia., D. Hyoerpathia.
A: Allodynia.
Answer: A: Allodynia. 
Explanation: None