Use the passage to answer the following question.

                                  Athlete's Foot
 
You don't have to be an athlete to get athlete's foot. But you're more prone to getting this infection if you hang around where athletes are- pools, locker-room showers, and changing rooms. Athlete's foot is caused by a fungus, and fungi like to grow in warm, dark, and humid places. The inside of a shoe, especially if your foot is wet from sweat, is heaven for fungi. The first sign of athlete's foot will probably be painful cracks between your toes. Over-the-counter foot sprays or powders may work, but if the problem persists, see a doctor who can prescribe anti-fungal drugs. To prevent the spread of the infection, dry your feet with a separate towel. The fungus that causes athlete's foot can persist for a long time. The best ways to prevent it are to keep your feet clean and dry, change your shoes and socks often, and use some sort of footwear in pools, locker-room showers, and changing rooms. Excerpted from"Your Fantastic Feet." Current Health 2, March 2004. © Weekly Reader Corporation

What is the best way to treat fungal infections like athlete's foot?
A. anti-fungal drugs
B. antihistamines
C. anti-viral drugs
D. antibiotics