This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Embryology 2, Subject name: Anatomy
[{'content': 'Primitive streak develops from \nSelect and explain. \nA. Mesoderm, B. Hypoblast, C. Epiblast, D. Neural plate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Around day 14, the epiblast cells form primitive streak .', 'role': 'assistant'}]