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: Microbiology
[{'content': 'Farmers lung is caused by - \nSelect and explain. \nA. Micromonospore faenia, B. Aspergillosis, C. Histoplasma capsulatam, D. All of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Micromonospore faenia Spores of some thermophilic actinomycetes such as faenia and Saccharomonsporia species may induce allergic alveolitis leading to COPD,farmer's lung.", 'role': 'assistant'}]