This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pharmacology
Drug of choice for prophylaxis of acute mountain sickness is? 
Select and explain. 
A. Diltiazem, B. Digoxin, C. Dexamethasone, D. Acetazolamide
D: Acetazolamide
Answer: D: Acetazolamide 
Explanation: DOC for acute mountain sickness are Carbonic anhydrase inhibitors like Acetazolamide. BEST treatment is to descent down because it occurs due to decreased pO2 at high altitudes. DOC for motion sickness is Hyoscine.