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: Unknown
[{'content': 'Essential amino acid amongst the following - \nSelect and explain. \nA. Valine, B. Lysine, C. Threonine, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 4d' i.e.. All Nutritionally Essential Nutritionally Nonessentiai Arginine - semi essential Alanine Histidine Asparagine Isoleucine Asparatate Leucine Cysteine Lysine Glutamate Methionine Glutamine Phenylalanine Glycine Threonine Praline Tryptophan Serine Valine Tyrosine", 'role': 'assistant'}]