All of the Following Are Guidelines for Cleaning the Oil-Immersion

Multiple Choice

All of the following are guidelines for cleaning the oil-immersion lens EXCEPT which statement?

A) Place a drop of lens-cleaning solution on the paper and completely remove any remaining oil.
B) Use a lens tissue to wipe the oil off the lens.
C) Use the coarse focus knob and move the objective lens away from the slide to create a working space for cleaning.
D) Use a paper towel to wipe the oil off the lens.