This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
[{'content': 'A 40-year-old man develops erythema nodosum, conjunctivitis, and a pleural effusion. Over several weeks, pulmonary lesions lead to cavitation and a large, thin-walled cavity. He was traveling in Arizona before becoming ill. Sputum samples reveal mature spherules. Which of the following is the most likely diagnosis? \nSelect and explain. \nA. Streptococcus, B. coccidioidomycosis, C. candidiasis, D. Staphylococcus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Coccidioidomycosis may present with a syndrome of erythema nodosum, fever, and conjunctivitis. Serious complications include cavitating lung lesions or meningitis.', 'role': 'assistant'}]