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 organism grown on agar shows green coloured colonies; likely organism is: \nSelect and explain. \nA. Staphylococcus, B. E.Coli, C. Pseudomonas, D. Peptostreptococcus', 'role': 'user'}, {'content': "Answer: C \nExplanation: The above pigments account for the greenish colonies seen with psuedomonas. Ref: Text Book of Microbilogy By Ananthanarayan, 6th Edition, Page 294 ; Harrison's Principles of Internal Medicine, 14th Edition, Page 944", 'role': 'assistant'}]