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
Light microscopy resolution -( 
Select and explain. 
A. 200 nm, B. 20 nm, C. 0.2 nm, D. 300 nm
D: 300 nm
Answer: D: 300 nm 
Explanation: Ans. is 'd' i.e., 300 nm