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: Unknown
Marker of Melanoma: 
Select and explain. 
A. S100, B. Ck 20, C. MTLF, D. Vimentin
A: S100
Answer: A: S100 
Explanation: (Rook’s Textbook of Dermatology 7thedition)
(Refer: Robbins Pathologic Basis of Disease, 8thedition, pg no: 1171-1175)