In 2012, 29 people across the United States suffered E. coli infections. The Centers for Disease Control and Prevention (CDC) linked most of these cases to raw clover sprouts at a specific restaurant chain. Which is the most effective way for the CDC to control this outbreak?
A. Impose a fine on the farm that produced these clover sprouts.
B. Distribute flyers about how to properly wash vegetables.
C. Instruct the public to avoid the contaminated food source.
D. Ask the public to stop consuming raw leafy greens.