This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
[{'content': 'In rectus sheath, branch of which aery makes an anastomosis with superior epigastric aery \nSelect and explain. \nA. Subclan Aery, B. External iliac Aery, C. Internal iliac Ae, D. Common iliac aery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Within the rectus sheath, there is anastomosis between superior epigastric aery (a branch of the internal thoracic aery) and inferior epigastric aery (a branch of the external iliac aery). The external iliac aeries are branches of the common iliac aery, which is, in turn, a branch of the abdominal aoa.', 'role': 'assistant'}]