None, the room is already lit.
both of them
They still haven't figured out how to screw in the lightbulb
Neither, it's diarrhea. Before you could think about it or even turn the lights on, you've already shat yourself.
At C level
All of them.
Sorry we closed 18 seconds ago and I've just cashed up."
Two. One to hold it in the socket and the other to drink until the room starts spinning!
It doesn't matter, mine itches so bad it's on fire, providing plenty of light for everyone in the room!
Because they don't have legs to walk, man.