Which Description Best Describes the Cell Wall of a Gram-Positive

Which description best describes the cell wall of a Gram-positive bacteria?

A) It is composed of a single plasma membrane and a thin outer layer of peptidoglycan.
B) It is composed of a double layer in the plasma membrane and a thin outer layer of peptidoglycan.
C) It is composed of a thick inner layer of peptidoglycan and a double layer of plasma membrane on the outside.
D) It is composed of a single plasma membrane and a thick outer layer of peptidoglycan.
E) It is composed of a single plasma membrane and a thin outer layer of cellulose.