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': 'Color of granule of actinomycetes? \nSelect and explain. \nA. Black, B. Yellow, C. Red, D. Brown', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b\' i.e., Yellow Granules of actinomyces are yellow coloured. "The abscesses of actinomycosis are filled with pus and yellow coloured granules known as sulfur granules". - Essentials of microbiology "The term \'sulfur granule\' refers only to the yellow color, the granules do not contain sulfur".- Medical mycology', 'role': 'assistant'}]