Proper hand hygiene technique with alcohol-based hand rub requires rubbing for at least:

✓ Correct Answer: Option B

Alcohol-based hand rub: apply product to palm, rub all surfaces (palms, backs, between fingers, fingertips, thumbs, wrists) for at least 20 seconds until dry. Use soap and water when hands are visibly soiled or for C. difficile (spores resist alcohol).