This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
[{'content': 'Semi essential amino acids are - \nSelect and explain. \nA. Arginine, B. Lysine, C. Leucine, D. Histidine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p> SEMI ESSENTIAL AMINO ACIDS:- An amino acid of which an adequate amount must be consumed in the diet to prevent the use of essential amino acids to synthesise it. Arginine and histidine form the group of semi essential amino acids. {Reference: Park&;s textbook of community medicine 23 rd edition}', 'role': 'assistant'}]