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
Pedicle TRAM flap derives its blood supply from ? 
Select and explain. 
A. Inferior epigastric vessels, B. Superior epigastric vessels, C. Circumflex, D. Internal pudendal vessels
B: Superior epigastric vessels
Answer: B: Superior epigastric vessels 
Explanation: 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