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: Medicine
[{'content': 'The Epwoh scale is used for assessing - \nSelect and explain. \nA. Body mass index, B. Vital capacity in post-operative patients, C. Sleep apnea, D. Risk of embolism in perioperative patient', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer- C. Sleep apneaThe Epwoh Sleepiness Scale-Obstructive sleep apneaNarcolepsyIdiopathic hypersomnia', 'role': 'assistant'}]