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: Pathology
Shock is a circulatory disturbance characterized by 
Select and explain. 
A. Increased blood pressure, B. Decreased volume of circulating blood, C. Elevated body temperature, D. Decreased volume of interstitial fluid
B: Decreased volume of circulating blood
Answer: B: Decreased volume of circulating blood 
Explanation: None