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': 'Fundus of gall bladder at which veebral level \nSelect and explain. \nA. L1, B. L3, C. S1, D. S3', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Transpyloric plane at L1 passes through many impoant structures End of spinal cord fundus of gall bladder Ist pa of duodenum neck of pancreas hilum of kidney (right and left) Origin of superior mesenteric aery ref - researchgate.net', 'role': 'assistant'}]