Some bacterial infections such as Methicillin-resistant Staphylococcus aureus (MRSA) are a serious health concern for humans because these infections cannot be controlled or killed by antibiotics. How can these antibiotic resistant infections be prevented?

A) using antibiotics to treat only viral infections


B) giving preventative antibiotics to hospital patients


C) avoiding the unnecessary prescription of antibiotics


D) discontinuing prescribed antibiotics once you start feeling better