This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Shock, Subject name: Surgery
15 - 30% blood loss seen in what class of hemorrhagic shock 
Select and explain. 
A. I, B. II, C. III, D. IV
B: II
Answer: B: II 
Explanation: Ans. is 'b' i.e., II Following table depicts the stages of hemorrhagic shock:Class of haemorrhagic shock IIIIIIIVBlood loss (mL)Up to 750750-15001500-2000>2000Blood loss (% blood volume)Up to 15l5-3030-40>40Pulse rate (per minute)<100100-120120-140>140Blood pressureNormalNormalDecreasedDecreasedPulse pressure (mm Hg)Normal or increasedDecreasedDecreasedDecreasedRespiratory rate (per minute)14-2020-3030-40>35Urine output (mL/hour>3020-305-15NegligibleCentral nervous system/ mental statusSlightly anxiousMildly anxiousAnxious, confusedConfused, lethargic