This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
Revised trauma score is 
Select and explain. 
A. Glasgow coma scale, B. Pulse, C. RR, D. BP
A: Glasgow coma scale
Answer: A: Glasgow coma scale 
Explanation: Glasgow coma scale : Total score = 13-15 Mild head injury = 9-12 Mild = 3-8 Ref : SRB&;s 4thE pg:1175