This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Circulation: Circulatory Shock and Its Treatment, Subject name: Physiology
Shock causes: 
Select and explain. 
A. Stagnant hypoxia, B. Anemic hypoxia, C. Hypoxic hypoxia, D. Histotoxic hypoxia
A: Stagnant hypoxia
Answer: A: Stagnant hypoxia 
Explanation: Ans: A (Stagnant hypoxia)Ref: Pat GK, Hypoxia and Oxygen Therapy, In: Textbook of Medical Physiology, 2nd ed, Abuja Publishing House 2011: 94: 754-55Explanation:Refer the explanation of previous question