In the circuit diagram, lamp P has a rating of $250\,\text{V},\,50\,\text{W}$ and lamp Q has a rating of $250\,\text{V},\,200\,\text{W}$. These two lamps are joined in series to a $250\,\text{V}$ power supply. Assume that the resistance of each lamp stays constant. Which statement most accurately describes the situation when the switch is closed?
- ALamp P emits four times as much power as lamp Q.
- BLamp P emits twice as much power as lamp Q.
- CLamp Q emits four times as much power as lamp P.
- DLamp Q emits twice as much power as lamp P.