Gram staining involves the following steps like: ( )

A、Make a slide of bacteria sample to be stained.
B、Add the primary stain (crystal violet) to the sample or slide and incubate for 1 minute.
C、Rinse sample or slide with acetone or alcohol for 30 seconds and rinse with a gentle stream of water.
D、Add the secondary stain safranin to the slide and incubate for 1 minute.