This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Medicine
[{'content': 'Which one of the following organs is enlarged? \nSelect and explain. \nA. Colon, B. Ovary, C. Stomach, D. Spleen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer C. StomachMassive dilation of the stomach with distal gas is most consistent with gastric outlet obstruction.', 'role': 'assistant'}]