The $I$-$V$ characteristics for two electrical components P and Q are shown below. Which of the following statements is correct?
- AP is a resistor and Q is a filament lamp.
- BThe resistance of Q increases as the current in it increases.
- CFor a current of $1.9\text{ A}$, the resistance of Q is approximately half that of P.
- DFor a current of $0.5\text{ A}$, the power dissipated in Q is double that in P.