This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Anatomy
[{'content': 'Farmers lung is caused due to exposure to \nSelect and explain. \nA. Bacillus subtilis, B. Thermoactinomyces saccharri, C. Aspergillus fumigates, D. Penicillium nalgiovense', 'role': 'user'}, {'content': "Answer: B \nExplanation: Farmer's Lung This condition results from exposure to moldy hay containing spores of thermophilic actinomycetes that produce a hypersensitivity pneumonitis. Ref Harrison 19th edition 1691", 'role': 'assistant'}]