In a Hospital Setting,constant Awareness Is Given to the Simple

In a hospital setting,constant awareness is given to the simple fact that patients come to the hospital because they are sick and vulnerable to disease.With the current system of medical care,by the time patients come to the hospital setting for care,they are sicker than ever in the past.The most common nosocomial infection seen in hospital patients is

A) common colds picked up on contaminated radiography equipment.
B) urinary tract infections from Foley catheter insertions.
C) hepatitis B infection from contaminated needles.
D) staphylococcal infection from labor and delivery.