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': 'Virus quantification is done by- \nSelect and explain. \nA. Egg inoculation, B. Hemadsorption, C. Plaque assay, D. Electron microscopy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Plaque assay and Pock assay are quantitative infective assays.', 'role': 'assistant'}]