This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
[{'content': 'Microscope used in microbiology are \nSelect and explain. \nA. Light microscope, B. Phase contrast microscope, C. Fluorescent microscope, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The morphological study of bacteria requires the use of microscopes. Microscopy has come a long way since Leeuwenhoek first observed bacteria over three hundred years ago using hand grounded lenses. Optical or Light microscope, Phase contrast microscopy, Fluorescent microscope, dark field / Dark ground microscope and Electron microscope Ref: Textbook of Microbiology; Ananthanarayan and Paniker; 9th edition; Pg no: 10', 'role': 'assistant'}]