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
[{'content': 'Oxygen as an emergency drug is contraindicated in \nSelect and explain. \nA. Anaphylaxis, B. Asthma, C. Hyperventilation, D. COPD', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]