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
[{'content': 'In vitrous what is measured for time since death - \nSelect and explain. \nA. Sodium, B. Potaossium, C. Proteins, D. Chloride', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Steady rise in potassium in vitreous humor after death up to 100 hours. Dr Narayana Reddys Synopsis of Forensic Medicine & Toxicology pg. 75', 'role': 'assistant'}]