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: Medicine
Which of the following statements regarding Glasgow coma scale are true? 
Select and explain. 
A. Ranges from 3 - 15, B. Less than 7 is classified as coma, C. More than 9 excludes coma, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Glasgow coma scale includes aspects of eye opening, verbal and motor response.