Which of the Following Is a True Statement About Gram

Which of the following is a true statement about Gram staining?

A) The Gram stain differentiates between the three domains.
B) In a Gram-negative cell, the crystal violet-iodide complex is retained by multiple layers of peptidoglycan.
C) The outer membrane is disrupted by the decolorizer.
D) Human cells appear Gram-positive.
E) The mordant is used so that Gram-negative cells may be observed.