The Empire's Space Station Is a Long Way from Any $\times$

The Empire's space station is a long way from any star.It is circular and has a radius of 5.10 km.The angular velocity that is needed to give the station an artificial gravity of 9.80 m/s² at its circumference is

A) 4.4 $\times$ 10^-2 rad/s
B) 7.0 $\times$ 10^-3 rad/s
C) 0.28 rad/s
D) - 0.22 rad/s
E) 1.3 $\times$ 10³ rad/s