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
Ectopic sebaceous glands in the mouth are called: 
Select and explain. 
A. Linea alba buccalis, B. Heck's disease, C. Lingual varices, D. Fordyce spots.
D: Fordyce spots.
Answer: D: Fordyce spots. 
Explanation: None