When You Turn on a Light Switch, the Light Comes

Multiple Choice

When you turn on a light switch, the light comes on instantly. This happens because

A) the electric field in the wire is propagated at a speed close to the speed of light.
B) the electric field in the wire is propagated at a speed close to the speed of sound in air.
C) a very small number of charges are moving very fast through the wire.
D) in the absence of an electric field, the average velocity of the charges in the wire is very large.
E) none of the above is true.