A $50-W$ and $75-W$ incandescent light bulbs are designed for use with the same voltage. What is the ratio of the resistance of the $50-W$ bulb to the resistance of the $75-W$ bulb?

A$)1\mathrm{.}5$

B$)0\mathrm{.}67$

C$)2\mathrm{.}3$

D$)0\mathrm{.}44$

E$)3\mathrm{.}0$