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
For 1 peptide bond formation how many high energy phosphate bonds are required: 
Select and explain. 
A. 0, B. 1, C. 2, D. 4
D: 4
Answer: D: 4 
Explanation: D i.e. 4