Which of the Following Reasons Is Given for a Reduced

Which of the following reasons is given for a reduced infection rate with tunneled catheters for long-term use as compared to peripherally inserted central catheter (PICC) lines?

A) The tunneled catheter is coated with an antibiotic before insertion.
B) The tunneled catheter is protected by the natural barrier of the skin.
C) Both types of long-term central access have the same level of infection rate.
D) During insertion of a tunneled cathartic surgically,the site is washed with antibiotic.