Which One of the Following Statements Concerning Rays Is False

Multiple Choice

Which one of the following statements concerning rays is false?

A) Rays point in the direction of the wave velocity.
B) Rays point outward from the wave source.
C) Rays are parallel to the wave front.
D) Rays are radial lines that originate from a point source of waves.
E) Rays for a plane wave are parallel to each other.