Isopropyl Alcohol (70%)is Commonly Used for Cleansing the Venipuncture Site

Isopropyl alcohol (70%) is commonly used for cleansing the venipuncture site before phlebotomy.The motion that should be used in cleansing is

A) beginning at the outer edge away from the intended site of needle entry, use concentric circles and gradually work in to the center.
B) using random motion, scrub over and around the intended site of needle entry for 1 full minute.
C) beginning at the intended site of needle entry, work in concentric circles away from the site.
D) using random motion, lightly wipe over the intended site for 2 full minutes.