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
Staining done for sebaceous cell carcinoma - 
Select and explain. 
A. Oil Red O, B. PAS, C. Methamine silver, D. KOH
A: Oil Red O
Answer: A: Oil Red O 
Explanation: . Oil Red O