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: Physiology
Binding site present on p unit of Na+ - K+ pump is 
Select and explain. 
A. Na+, B. K+, C. ATP, D. Glycosylation
D: Glycosylation
Answer: D: Glycosylation 
Explanation: D i.e. Glycosylation