This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
[{'content': "Which of the following Aspergillus species produce black coloured colonies on sabaraud's dextrose agar? \nSelect and explain. \nA. A fumigatus, B. A niger, C. A flavus, D. None", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Aspergillus fumigatus produce green colonies A niger -black colonies A flavus-golden-yellow colonies Ref: Baveja 5th ed pg: 559', 'role': 'assistant'}]