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: Medicine
[{'content': 'Extrinsic allergic alveolitis is caused by infection with \nSelect and explain. \nA. Histoplasma capsulatum, B. Thermophilic Actinomycetes, C. Rhinosporidium seeberi, D. Cryptococcus pneumoniae', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]