This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
[{'content': 'Which one of the following is a potent stimulus for the production of erythropoietin? \nSelect and explain. \nA. Alpha interferon, B. Interleukin-3, C. Hypoxia, D. Hypercarbia', 'role': 'user'}, {'content': "Answer: C \nExplanation: Hypoxia oring the production of hemoglobin F both direct effects on globin gene expression, as well as up-regulated production of erythropoietin. Ref: Ganong's Review of Medical Physiology Twenty-Third Edition Page No:526", 'role': 'assistant'}]