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: Pediatrics
LEIGH disease is due to the accumulation of- 
Select and explain. 
A. Glycogen, B. Pyrodoxine, C. Sphingomyelin, D. None
D: None
Answer: D: None 
Explanation: Ans. is 'None'