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
In rigor mois muscle : 
Select and explain. 
A. Stiffens, B. Shoens, C. Stiffens and shoens, D. Stiffens and lengthens
C: Stiffens and shoens
Answer: C: Stiffens and shoens 
Explanation: C i.e. Stiffens & shoen In rigor mois, muscle shoen (contracted) & stiffensQ, and the reaction changes from alkaline to distinctly acidic d/t local formation of lactic acid.