Which of the Following Is the Best Description of How

Which of the following is the best description of how a fluorescent bulb works?

A) Electrons flow through the bulb, causing a chemical reaction in the gas atoms inside the bulb, which causes these atoms to emit light.
B) Electrons flow from one end of the bulb to the other, hitting gas atoms and causing them to emit light.
C) A gas fills the bulb and when the gas atoms strike the walls of the bulb the material in the wall emits light.
D) A gas flows from one end of the bulb to the other, and the gas atoms are energized by the electric field which causes the atoms to emit light.
E) Electrons flowing through the bulb get heated up within the bulb, and these electrons emit light.