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': 'An HIV patient developed goitre. On examination there was non-tender diffuse enlargement of thyroid. All of the following can be cause of it, except: \nSelect and explain. \nA. Toxoplasma, B. Cryptococcus, C. Aspergillus, D. Pneumocystic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c. Aspergillus', 'role': 'assistant'}]