This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
[{'content': 'Most common quadrant for carcinoma Breast: \nSelect and explain. \nA. Lower outer, B. Lower inner, C. Upper outer, D. Upper inner', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Upper Outer(Ref Bailey an Love Page 811)* MC site - Upper outer* Least Common - Lower Inner', 'role': 'assistant'}]