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 mortis occurs first in which voluntary muscle- 
Select and explain. 
A. Muscles of eyelids, B. Small muscles of hands, C. Neck muscles, D. Face muscles
A: Muscles of eyelids
Answer: A: Muscles of eyelids 
Explanation: Among voluntary muscles, muscles of eyelid (upper) are involved first.