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: Dental
Small yellowish elevation on the surface of the mucosa is : 
Select and explain. 
A. Fordyce's spots., B. Lines Alba., C. Traumatic ulcer., D. Lichen planus.
A: Fordyce's spots.
Answer: A: Fordyce's spots. 
Explanation: In many areas of lining mucosa, especially the labial and buccal mucosa, are Fordyce's spots or granules. These spots are a normal variant, visible as small, yellowish elevations on the surface of the mucosa.