Which of the following statements by a phlebotomist regarding skin preparation for blood cultures is appropriate?
1) Clean the site with an alcohol swab for 30 seconds and allow it to dry.
2) Clean the site with an iodine solution for 1 minute and allow it to dry.
3) Clean the site with a chlorhexidine solution for 15 seconds and allow it to dry.
4) Clean the site with soap and water for 10 seconds and allow it to dry.