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
Post mortem staining gets fixed after - 
Select and explain. 
A. 2-3 hrs., B. 3-4 hrs., C. 5-6 hrs., D. 6-7 hrs.
D: 6-7 hrs.
Answer: D: 6-7 hrs. 
Explanation: Postmortem staining get fixed in 6-12 hours.