Why should a spare laser printer toner cartridge be kept in its bag until it is needed for a replacement?
A) The toner particles become “stale” when oxygen is present
B) Toner cartridges contain a timer that begins when the package is opened
C) The toner cartridge contains light-sensitive materials
D) Toner cartridges are sensitive to changes in altitude
E) When opened, the cartridge jumps out and yells “SURPRISE!”