Studies in the Healthcare Field Have Identified Stethoscopes as One

Studies in the healthcare field have identified stethoscopes as one major cause of patient infections. To combat this cause, all healthcare professionals are urged to sterilize their stethoscopes before and after using with each patient. What approach would be best to ensure that this happens?

A) Provide dispensers with sterilization pads at the entrance to all patient rooms, examining rooms, labs, and operating areas. Periodic unscheduled audits will be taken of the number of pads used. Praise or reprimand will be given based on audit findings.
B) Same as A above except each wrapper includes a coupon for entering a weekly drawing for a prize of one's choice, and no audit will be conducted.
C) Same as A above, except wrappers are saved and turned in to supervisor/ department head at end of each shift and no audit will be conducted. Cooperating professionals will receive positive reinforcement for taking action, regardless of number of wrappers submitted.
D) Professionals working in each unit will be allowed to design their own unit's nonmonetary incentive/reminder for participating in the stethoscope sterilization initiative.