Question 11If an arc of $60^\circ$ on circle $\mathrm{I}$ has the same length as an arc of $45^\circ$ on circle $\mathrm{II},$ the ratio of the area of circle $\mathrm{I}$ to that of circle $\mathrm{II}$ is:$16:9$$9:16$$4:3$$3:4$none of these