Why Aren't Antibiotics Used Against the Common Cold

Multiple Choice

Why aren't antibiotics used against the common cold?

A) Cold viruses have already evolved resistance to antibiotics.
B) Colds are caused by viruses and have never been affected by antibiotics.
C) Antibiotics are only active against infection in the blood but not the respiratory tract.
D) They're only effective if you take them within the first few hours of the infection.