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
True about amino group of amino acid is : 
Select and explain. 
A. Accepted by a-ketoglutarate, B. Funneled to L- Glutamate, C. Prevents oxidative breakdown, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: All of the above