This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Viral plaque is made in lab for - 
Select and explain. 
A. Quantitative assay of infectivity of virus, B. Diagnosis of virus, C. Qualitative assay of infectivity of virus, D. Type of virus
A: Quantitative assay of infectivity of virus
Answer: A: Quantitative assay of infectivity of virus 
Explanation: Quantitative assays measure the actual number of infectious paicles in the inoculum includes 2 methods-plaque assay and pock assay. REF:ANATHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 8TH EDITION PAGE NO:437