52. Which of the following statements is TRUE for Gram-negative bacteria? (A) Gram-negative bacteria cell wall is lack of lipopolysaccharide. (B) Gram-negative bacteria generally contain a capsule outside the cell wall. (C) Gram-negative bacteria contain endotoxin, whereas Gram-positive bacteria do not. (D) Gram-negative bacteria show a darker color than Gram-positive bacteria. (E) Gram-negative bacteria have thicker peptidoglycan than Gram-positive bacteria.