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': 'Nocardia is differentiated from Actinomyces by - \nSelect and explain. \nA. Gram stain, B. ZN stain, C. Nocardia causes mycetoma, Actinomyces does not, D. Nocardia is faculative anerobe', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Nocardia are partially acid fast while Actionomyces are non acid fast.', 'role': 'assistant'}]