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: Pediatrics
[{'content': 'Which of the following is the major site of erythropoietin production during the fetal stage? \nSelect and explain. \nA. Liver, B. Yolk sac, C. Bone, D. Spleen', 'role': 'user'}, {'content': "Answer: A \nExplanation: Erythropoietin is produced in the fetal liver in the first and second trimester.After bih, the major site of production is in the kidney.(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 2305 - 2306)", 'role': 'assistant'}]