The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because

• A. they contain ether-linked isoprenoids in their plasma membrane
• B. they lack murein in their cell wall
• C. they contain 80S, as opposed to 70S, ribosomes
• D. all of the above