[单选题]
4. Why do antibiotics destroy bacteria but do9s01)mv5/sv iu k nioc not affec gt6 ac(-ygmhhgb5ue 38z+1;myds()yetve1yt viruses?
A. Virus metabolism is not affected by antibiotics
B. Bacterial metabolism is affected by antibiotics.
C. Antibiotics stimulate antibody production in the host.
D. Viruses can metabolise antibiotics.