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: Anaesthesia
Total cerebral metabolic failure occurs at blood flow of 
Select and explain. 
A. 10 m1/100 gm/min, B. 20 m1/100 gm/m1, C. 30 m1/100 gm/min, D. 40 m1/100 gm/ml
A: 10 m1/100 gm/min
Answer: A: 10 m1/100 gm/min 
Explanation: A i.e. 10 ml/100 gm/min