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: Anatomy
[{'content': 'Predominant blood supply to the supraduodenal bile duct is from vessels ? \nSelect and explain. \nA. Which run upward from the major vessels located near the lower pa of bile duct such as the gastroduodenal and retro duodenal aery, B. Which run downward along the bile duct from right hepatic aery, C. That arise from hepatic aery proper as it carries up along the common bile duct and supplies it with twigs in a non-axial distribution, D. That run from cystic aery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Approximately 60% of the blood supply to the supraduodenal bile duct originates from the pancreaticoduodenal and retroduodenal aeries, whereas 38% of the blood supply originates from the right hepatic aery and cystic duct aery and 2 percent is non-axial.', 'role': 'assistant'}]