When One Prepares to Enter the Operating Room,which Technique Demonstrates

When one prepares to enter the operating room,which technique demonstrates the safest outcome?

A) Keeping the hands below the elbows
B) Applying surgical gloves before the scrub
C) Scrubbing for at least 3 to 5 minutes with an antimicrobial agent
D) Drying the hands and arms,starting at the elbow and moving toward the fingers