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
Following death of a person, what happens to potassium level in the vitreous. 
Select and explain. 
A. Potassium level falls, B. Potassium level increases, C. Remains unchanged, D. It depends on cause of death
B: Potassium level increases
Answer: B: Potassium level increases 
Explanation: Potassium concentration raises at the rate of 0.17-0.25 mmol per hour following death. It helps in determination of time since death.