Which of the Following Is a True "Wave" as the Word

Which of the following is a true "wave" as the word is defined in physics?

A) a row of falling dominoes, in which each domino knocks over its neighbor as it falls
B) ripples on the surface of a pond, extending outward from a pebble dropped in the water
C) Both of the above.
D) a large water wave coming into the beach, one that surfers can ride on
E) All of the above.