The owner of a petting zoo contacts your microbiology laboratory for advice in preventing the transmission of a microbe that can cause hemorrhagic colitis and hemolytic uremic syndrome

You recall that this organism produces a verotoxin that causes severe abdominal cramps and bloody diarrhea. What control measure(s) would you recommend?
A) Encourage thumb sucking on one hand only
B) Prohibit all contact with any animals
C) Have hand washing stations available at the exit
D) Sell only unpasteurized apple juice

C