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: Social & Preventive Medicine
[{'content': 'Lathyrism is due to: \nSelect and explain. \nA. Afla toxin, B. Beta oxalyl amino acid, C. Saccharin, D. Cyclamate', 'role': 'user'}, {'content': "Answer: B \nExplanation: The toxin present in lathyrus seeds has been identified as Beta oxalyl amino alanine (BOAA). Ref: Park's textbook of Preventive and Social Medicine, 21stedition, page-597", 'role': 'assistant'}]