This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Death and postmortem changes, Subject name: Forensic Medicine
In vitrous what is measured for time since death - 
Select and explain. 
A. Sodium, B. Potaossium, C. Proteins, D. Chloride
B: Potaossium
Answer: B: Potaossium 
Explanation: Steady rise in potassium in vitreous humor after death up to 100 hours. Dr Narayana Reddys Synopsis of Forensic Medicine & Toxicology pg. 75