A patient has a viral sinus infection, and the provider tells the patient that antibiotics will not ...

A patient has a viral sinus infection, and the provider tells the patient that antibiotics will not be prescribed. The patient wants to take an antibiotic and asks the nurse what possible harm could occur by taking an antibiotic.
 
  Which response by the nurse is correct?
  a. Antibiotics are mutagenic and can produce changes that cause resistance.
  b. Even normal flora can develop resistance and transfer this to pathogens.
  c. Host cells become resistant to antibiotics with repeated use.
  d. Patients who overuse antibiotics are more likely to have nosocomial infections.