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: Anaesthesia
[{'content': 'A 65 year old man is scheduled for emergency laparoscopic appendectomy. He is a chronic smoker with history of severe COPD, diabetic and hypertensive, on insulin, metformin and antihypertensive medications, not on regular follow up. He also complains of dyspnea on walking more than a few meters. This patient would be assigned \nSelect and explain. \nA. ASA 3E, B. ASA 3, C. ASA 4E, D. ASA 4', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Elderly male patient –poorly controlled diabetic and hypertensive, known smoker with COPD. His co-morbidities are constant threat to life.\xa0 And since emergency appendectomy is done, it falls under ASA 4E.', 'role': 'assistant'}]