A thin uniform rod of length L and mass M is bent into a circular hoop. Which one of the following describes the rotational inertia of this hoop about an axis through its rim, perpendicular to the plane of the hoop?

A. ML^2

B. ML^2/3pi^2

C. ML^2/pi^2

D. ML^2/2pi^2

E. ML^2/4pi^2

A. ML^2

B. ML^2/3pi^2

C. ML^2/pi^2

D. ML^2/2pi^2

E. ML^2/4pi^2