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: Biochemistry
[{'content': 'Most non polar Amino Acid is \nSelect and explain. \nA. Leucine, B. Glycine, C. Arginine, D. Lysine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Non-polar amino acids are very much less polar than polar amino acids.\nAmong the given options, only leucine is non-polar.', 'role': 'assistant'}]