This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head Injury, Subject name: Surgery
Best prognostic factor for head injury is: 
Select and explain. 
A. Glassgow coma scale, B. Age, C. Mode of injury, D. CT findings
A: Glassgow coma scale
Answer: A: Glassgow coma scale 
Explanation: Ans is 'a' ie. Glasgow coma scale Repeat from All India 07Harrison writes- " In severe head injury, eye opening, the best motor response of the limbs, and verbal output have been found to be roughly predictive of outcome; these are summarized using the ' Glasgow coma scale "Glasgow coma scale is used to determine the conscious level of the patientRanges from 3 to 15.A score of 7 or less is classed as comaA score of 9 or more excludes coma