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: Forensic Medicine
Immediate sign of death is: DNB 10 
Select and explain. 
A. Fall in body temperature, B. Dilatation of pupil, C. Changes in skin, D. Cessation of respiration and circulation
D: Cessation of respiration and circulation
Answer: D: Cessation of respiration and circulation 
Explanation: Ans. Cessation of respiration and circulation