to prepare the skin for injection the nurse would use

to prepare the skin for injection the nurse would use:
A. friction with back and forth motions at the site with alcohol swab.
B. friction and alcohol swab moving from outer edge to center of site.
C. friction and alcohol swab with circular motions and palpate site gently with finger pad before injection.
D. friction and circular motions with alcohol swab from center of site outward.