This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Pediatrics
6 year old drowsy child came in emergency with history of vomiting, loose motion for 3 days. On examination he had sunken eye, hypothermia, skin on pinching taken time to reve diagnosis 
Select and explain. 
A. No dehydration, B. Mild dehydration, C. Some dehydration, D. Severe dehydration
D: Severe dehydration
Answer: D: Severe dehydration 
Explanation: Sunken eyes, mouth and tongue very dry , condition lethargy ,skin pinch goes back very slowly The patient has 2 / more signs there is severe dehydration Ref: Ghai pediatrics eighth edition pg no 293