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
Electron microscopy is used for following except ? 
Select and explain. 
A. To differentiate T and B lymphocytes, B. IgG deposits in kidney, C. TPI, D. Flagella
C: TPI
Answer: C: TPI 
Explanation: Ans. is 'c' i.e., TPI