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
Casper Dictum is: 
Select and explain. 
A. Identification of dead body, B. Calculation of time since death, C. Detection of child abuse, D. Detection of Co poisoning
B: Calculation of time since death
Answer: B: Calculation of time since death 
Explanation: Calculation of time since death