This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Which of the following is the most common congenital anatomic variant of the human pancreas? \nSelect and explain. \nA. Pancreas divisum, B. Annular pancreas, C. Duplication of pancreaticoduodenal aery, D. Pancreas trivisum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pancreas divisum occurs when the embryologic ventral and dorsal pancreatic anlagen fail to fuse, so pancreatic drainage is mainly through the accessory papilla. It is the most common congenital anatomic variant of the human pancreas. Reference: Harrisons Principles of Internal Medicine, 18th Edition', 'role': 'assistant'}]