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': "Patey's mastectomy is a type of \nSelect and explain. \nA. Simple mastectomy, B. Extended mastectomy, C. Modified radical mastectomy, D. Halsted's radical mastectomy", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) Modified radical mastectomy(Ref. Bailey and Love 26th edition Page 813)* In Patey's type of MRM- Pectoralis Minor muscle removed.", 'role': 'assistant'}]