Irina Is an American Who Is Traveling Through Northern Africa

Irina is an American who is traveling through Northern Africa.Today,she's staying with friends in a house that is 20 miles south of Cairo,Egypt.To avoid traveler's diarrhea,Irina should

A) wash fruits and vegetables in fresh water before eating them.
B) drink only water that has been boiled or is in a sealed bottle.
C) not be concerned because Egypt is a low-risk country.
D) purchase only fresh fruits and vegetables from street vendors.