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': 'Aflatoxin is produced by - \nSelect and explain. \nA. Aspergillus flavus, B. Aspergillus famigatus, C. Calviceps purpura, D. Argemone mexicana', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Aspergillus flavus", 'role': 'assistant'}]