Viruses Are Completely Unaffected by Antibiotics Because

Viruses are completely unaffected by antibiotics because

A) they rely almost completely on the host cell's metabolic machinery for their replication, making it difficult to find a target for selective toxicity.
B) they have no cell wall, ribosomes, or any other structure targeted by antibiotics.
C) they rely almost completely on the host cell's metabolic machinery for their replication, making it difficult to find a target for selective toxicity AND most viruses are innately resistant to broad- and narrow-spectrum antibiotics.
D) They have no cell wall, ribosomes, or any other structure targeted by antibiotics AND they rely almost completely on the host cell's metabolic machinery for their replication, making it difficult to find a target for selective toxicity.
E) most viruses are innately resistant to broad- and narrow-spectrum antibiotics.