This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Microbiology
A person gets infected in a hospital and clinical manifestation appears after he is discharged this is called as 
Select and explain. 
A. Nosocomial infection, B. Oppounistic infection, C. Epizootic infection, D. Physician induced
A: Nosocomial infection
Answer: A: Nosocomial infection 
Explanation: Cross infections occurring in hospitals are called nosocomial infections. Ref: Ananthanarayan& Paniker&;s textbook of microbiology, 9th edition. Pg no.71