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
Difference in nicotinic stomatitis from papillary hyperplasia: 
Select and explain. 
A. Multiple dots at periphery, B. Rings at centre, C. Small centrally placed dot, D. Rings at periphery
C: Small centrally placed dot
Answer: C: Small centrally placed dot 
Explanation: None