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': 'To see the bacteria, methods used are - \nSelect and explain. \nA. Microscopy, B. Stained preparations, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Individual bacterial cells hard to see because\n\n\nThey are too small to be seen by naked eye.\nThey are almost transparent\n\n\nSo, to be seen they require-\n\n\nMagnification under microscope\nStaining techniques to produce contrast', 'role': 'assistant'}]