A Particle Moves Uniformly Around the Circumference of a Circle $\pi$

Multiple Choice

A particle moves uniformly around the circumference of a circle whose radius is 8.0 cm with a period of $\pi$ /20 s.The angular velocity $\omega$ of the particle is

A) 2.5 rad/s
B) 3.2 $\times$ 10² rad/s
C) 40 rad/s
D) 7.9 rad/s
E) 0.96 rad/s