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
Arterial O2 content is reduced in one of the following ­ 
Select and explain. 
A. Stagnant hypoxia, B. Anemic hypoxia, C. Histotoxic hypoxia, D. Ischemic hypoxia
B: Anemic hypoxia
Answer: B: Anemic hypoxia 
Explanation: 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.