A food worker has just finished cutting raw meat on a cutting board and is about to cut lettuce for a salad. What must the food worker do to prevent cross-contamination?

Wipe the board with a paper towel and use a new knife.
Rinse the board and knife off with water; and wash hands.
Wipe the board and knife with a cloth rinsed in bleach water.
Wash, rinse and sanitize the board and knife; and wash hands.