Which Statement About Gram-Negative Bacteria Is Correct

Multiple Choice

Which statement about gram-negative bacteria is correct?

A) Penicillins are the best antibiotics to use against them.
B) They often possess an outer membrane containing toxic lipopolysaccharides.
C) Their chromosomes are composed of DNA tightly wrapped around large amounts of histone proteins.
D) Their cell walls are primarily composed of peptidoglycan.