This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thanatology, Subject name: Forensic Medicine
Which of the following is used for determining time since death by algor mois? 
Select and explain. 
A. Madea's formula, B. Calorimetry formula, C. Nysten's rule, D. Henssge nomogram
D: Henssge nomogram
Answer: D: Henssge nomogram 
Explanation: Time since death from algor mois is from nomogram method devised by Henssge. This method is based on experimental data, which can be carried out by a simple computer program or by a nomogram. Adjustments are built in for the body weight, ambient temperature and body temperature. It provides a 95% accuracy of estimating the TSD(time since death) during the first 15 h (with an error of +-2.8 h).