According to the Food and Drug Administration, Which of the Following

According to the Food and Drug administration, which of the following must occur in order for a restaurant to be protected from lawsuits?

A) The food preparation area should be inspected regularly.
B) Food must be properly handled.
C) All employees should practice good hand-washing techniques.
D) The customers should be advised of any known risks so that they can decide for themselves whether to eat the food or drink the beverage.
E) All of the above