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 35 year old woman is scheduled to undergo elective surgery for removal of a large ovarian tumor. Comorbidities include type 2 diabetes treated with metformin. She is anemic due to menorrhagia. She is a non-smoker, occasional social drinker and has BMI of 40. This patient would be placed under ASA grade \nSelect and explain. \nA. ASA 1, B. ASA 2, C. ASA 3, D. ASA 4', 'role': 'user'}, {'content': 'Answer: C \nExplanation: She is diabetic on treatment and anemic, social alcohol drinker and has BMI of40.\nSo she has co-morbidities which is causing moderate limitation in activity but not incapacitating, so ASA grade 3.', 'role': 'assistant'}]