The circuit diagrams each display two lamps $X$ and $Y$, and every lamp is connected to a cell. The current in lamp $X$ is $0.50\,\text{A}$ and its resistance is $9.6\,\Omega$. The current in lamp $Y$ is $3.0\,\text{A}$ and its resistance is $1.2\,\Omega$. Determine the ratio $\dfrac{\text{power in lamp }X}{\text{power in lamp }Y}$?
- A0.22
- B0.75
- C1.3
- D4.5