Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not.

Which statement best describes who is correct?

A) Brody is correct because the wave involves an input of energy.

B) Ethel is correct because energy is not carried from one place to another.

C) Brody is correct because the pattern repeats.

D) Ethel is correct because the motion has no pattern.