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': 'Pulse proteins are deficient in - \nSelect and explain. \nA. Methionine, B. Lysine, C. Threonine, D. All', 'role': 'user'}, {'content': "Answer: A \nExplanation: -pulse protein is deficient in methionine. - these are known as limiting aminoacid. - when two or more of vegetarian foods are eaten together, their protein supplement one another. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:610 <\\p>", 'role': 'assistant'}]