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': "'Gut tube is developed from which germ layer \nSelect and explain. \nA. Ectoderm, B. Mesoderm, C. Endoderm, D. Neuroectoderm", 'role': 'user'}, {'content': 'Answer: C \nExplanation: The gut is derived from the yolk sac, and hence is endodermal in origin.', 'role': 'assistant'}]