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

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

Coarse Focus Knob

A control mechanism on microscopes used for making large adjustments in focus, allowing for the initial focusing of the microscope lens on the specimen.

Lens-Cleaning Solution

A specially formulated liquid used in the maintenance of optical lenses to remove dust, fingerprints, and smudges.

Lens Tissue

Specialized transparent tissue in the eye that focuses light rays onto the retina to facilitate clear vision.