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': 'Arterial O2 content is reduced in one of the following \xad \nSelect and explain. \nA. Stagnant hypoxia, B. Anemic hypoxia, C. Histotoxic hypoxia, D. Ischemic hypoxia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Arterial PO2/ Dissolved oxygen is normal in anemic hypoxia, but the arterial oxygen content is low. Whereas, in Hypoxic hypoxia, both are low. In case of stagnant hypoxia/ischemic hypoxia and histotoxic hypoxia, both are normal.', 'role': 'assistant'}]