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: Physiology
[{'content': 'Erythropoietin production is inhibited by ? \nSelect and explain. \nA. Estrogen, B. Progesterone, C. Thyroxine, D. Testosterone', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., EstrogenThe most impoant stimulus for erythropoietin secretion is hypoxia.Other stimulus that can increase its secretion are cobalt salts, androgens, alkalosis due to high altitude, and catecholamines beta-adrenergic mechanism.", 'role': 'assistant'}]