Penicillin inhibits bacterial growth by preventing the cross-linking during peptidoglycan synthesis.Why does penicillin not inhibit growth of archaeal cells?

A)Archaeal cells do not have a cell wall.
B)Most archaeal cells have a cell wall,but it is not composed of peptidoglycan.
C)Penicillin is unable to penetrate the lipid outer membrane that blocks access of penicillin to the peptidogycan crosslinking enzymes.
D)Pencillin is unable to penetrate the S layer to reach the peptidoglycan layer underneath.