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': "The most reliable method of estimating blood alcohol level is: Kerala 09 \nSelect and explain. \nA. Cavett's test, B. Breath alcohol analyzer, C. Gas liquid chromatography, D. Thin layer chromatography", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Gas liquid chromatography', 'role': 'assistant'}]