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
[{'content': 'Best medium to estimate time since death: Maharashtra 09 \nSelect and explain. \nA. Blood, B. Vitreous humor, C. CSF, D. Pericardial fluid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Vitreous humor', 'role': 'assistant'}]