This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
[{'content': 'Which is the best substitute for esophagus? \nSelect and explain. \nA. Jejunum, B. Stomach, C. Left sided colon, D. Right sided colon', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Gastric conduit is based on right gastric and right gastroepiploic vessels', 'role': 'assistant'}]