This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pharmacology
[{'content': 'At high altitude of around 3000 meters, a person complains of breathlessness. All of the following can be used for management EXCEPT: \nSelect and explain. \nA. Intravenous digoxin, B. Oxygen consumption, C. Immediate descent, D. Acetazolamide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: High altitude pulmonary edemaHigh altitude cerebral edema/acute mountain sickness* Immediate descent to at least 2000 feet (If possible)* Rest, reclined with head elevation* O2 supplementation (SpO2 >90%)* Nifedipine or sildenafil* Immediate descent to at least 2000 feet (If possible)* Rest, reclined with head elevation* Mild - Acetazolamide* Moderate/Severe- Dexamethasone', 'role': 'assistant'}]