What is the angular speed, in rad$/$s$,$ of a flywheel turning at $813\mathrm{.}0rpm?$

A$)63\mathrm{.}84ra\frac{d}{s}$

B$)85\mathrm{.}14ra\frac{d}{s}$

C$)13\mathrm{.}53ra\frac{d}{s}$

D$)95\mathrm{.}33ra\frac{d}{s}$