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
The last to receive electrons in electron transpo system is: 
Select and explain. 
A. Coenzyme-Q, B. FADH2, C. 2, D. Cytochrome-C
C: 2
Answer: C: 2 
Explanation: Ans. c. 02