In a Single Electric Cord, Such as a Cord That

In a single electric cord, such as a cord that connects a wall socket with an electric light,

A) there are two wires, both carrying giant pumpkins into the light bulb.
B) there is just one wire, carrying electrons into the light bulb.
C) there are two wires, one carrying electrons into the light bulb and the other carrying electrons out.
D) there are two wires, one carrying protons into the light bulb and the other carrying protons out of the light bulb.
E) there is just one wire, carrying protons into the light bulb.