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: Pharmacology
Omeprazole act by inhibiting - 
Select and explain. 
A. Nall+ATPase, B. NalCATPase, C. Calcium channels, D. 1-11K+ATPase
D: 1-11K+ATPase
Answer: D: 1-11K+ATPase 
Explanation: Ans. is 'd' i.e., HICATPase