This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory chain, Subject name: Biochemistry
Which of the following completely blocks oxidation and phosphorylation by blocking the flow of protons through ATP synthase? 
Select and explain. 
A. Oligomycin, B. Cyanide, C. BAL, D. Carboxin
A: Oligomycin
Answer: A: Oligomycin 
Explanation: The antibiotic oligomycin completely blocks oxidation and phosphorylation by blocking the flow of protons through ATP synthase. Reference: Harper; 30th edition; Page no: 132