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: Physiology
Rigor mortis results after death is due to 
Select and explain. 
A. Failure of acetylcholine to diffuse, B. Failure of ATP supply, C. Failure of break down of calcium bridges, D. None of the above
B: Failure of ATP supply
Answer: B: Failure of ATP supply 
Explanation: None