A CD Has a Diameter of 12

Multiple Choice

A CD has a diameter of 12.0 cm.If the CD is rotating at a constant frequency of 6.00 cycles per second,then the angular velocity is

A) 21.5 rad/s.
B) 26.9 rad/s.
C) 29.6 rad/s.
D) 33.3 rad/s.
E) 37.7 rad/s.