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': 'Germ cells in the ovary develop from- \nSelect and explain. \nA. Coelomic endoderm, B. Trophoblastic layer, C. Yolk sac, D. Surface ectoderm', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]