This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
[{'content': 'Pedicle TRAM flap derives its blood supply from ? \nSelect and explain. \nA. Inferior epigastric vessels, B. Superior epigastric vessels, C. Circumflex, D. Internal pudendal vessels', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pedicle TRAM flap is used in breast reconstruction Pedicle TRAM flap derives its blood supply from superior epigastric vessels TRAM: controlateral transverse rectus abdominis muscle flap Ref; (page no; 562) 5th edition of SRB&;S manual of Surgery', 'role': 'assistant'}]