What Is One Way to Prevent Guinea Worm Disease (GWD)

What is one way to prevent Guinea worm disease (GWD) ?

A) Educate the human population about GWD and ways to prevent it.
B) Kill copepods with pesticides.
C) Drink filtered water.
D) Avoid immersing GWD blisters in water.
E) All of the above are ways to prevent GWD.