This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Death and postmortem changes, Subject name: Forensic Medicine
In which of the following rigor mois is not seen? 
Select and explain. 
A. Well built male, B. Well built female, C. Old patient> 80 years, D. Fetus <7 months
D: Fetus <7 months
Answer: D: Fetus <7 months 
Explanation: Rigor mois is not seen in fetus less than 7 months. It develops slowly and is marked in healthy adults. It is feeble and rapid in infants. Dr. Narayana Reddys Synopsis of Forensic Medicine & Toxicology 27 th edition pg. 80.