Which of the Following Is NOT a Step in Preparing

Which of the following is NOT a step in preparing a wet-mount?

A) Place the specimen on the slide and add a small drop of water to it.
B) Use the coarse adjustment knob to move the objective lens as close to the specimen as possible without touching the slide.
C) Do not use a coverslip with a wet-mount preparation.
D) Using tweezers or your fingers, touch the water stain with the edge of the coverslip.