NONE! ITS A SECRET GOVERNMENT PLOT TO KEEP US IN THE DARK!"
Zero. You can't fit a hairless ten-year-old inside a light bulb.
Tires need changing too you know!
Doesn't matter. They'll just nerf darkness next patch instead.
A: 50. One to screw in the light bulb and the remaining 49 to guard him .
None. People who glow in the dark don't need lightbulbs.
Chicken Kiev