This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
Which of the following indicates hypoperfusion? 
Select and explain. 
A. Systolic BP<90 mm Hg, B. Lactic acidosis, C. Oliguria, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. (d) All of the aboveRef: Bailey and Love Principles and Practice of Surgery, 26th ed p-13-18Indicators of hypoperfusion* Systolic BP <90mm.hg* Mean blood pressure by 30mmofHg* Acidosis* Elevated lactate level* Oliguria.