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: Biochemistry
Which of the following vitamins is a major electron acceptor in electron transport chain 
Select and explain. 
A. Vitamin B1, B. Vitamin B2, C. Vitamin B3, D. Vitamin B6
C: Vitamin B3
Answer: C: Vitamin B3 
Explanation: NAD+ is the major electron acceptor in electron transport chain. NAD+ is derivative of the vitamin B3 (niacin).