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
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 
Select and explain. 
A. ASA 1, B. ASA 2, C. ASA 3, D. ASA 4
C: ASA 3
Answer: C: ASA 3 
Explanation: She is diabetic on treatment and anemic, social alcohol drinker and has BMI of40.
So she has co-morbidities which is causing moderate limitation in activity but not incapacitating, so ASA grade 3.