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
Rigor mois in a foetus develops after attaining: 
Select and explain. 
A. 3 months of age, B. 4 months of age, C. 7 months of age, D. 10 months of age
C: 7 months of age
Answer: C: 7 months of age 
Explanation: C i.e. 7 months of age