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': "Which of the following is the most reliable method of estimating blood alcohol level ? \nSelect and explain. \nA. Cavett's test, B. Breath alcohol anaylzer, C. Gas liquid chromatography, D. Thin layer Chromatography", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Gas chromatography is most desirable method of alcohol estimation for medicolegal purpose.', 'role': 'assistant'}]