The angular speed for daily rotation of the earth in rad S-1 is______________?

The angular speed for daily rotation of the earth in rad S-1 is______________?

A. 7.3 x 10 radians/second
B. 7.3 x 5 radians/second
C. 3.7 x 10 7.3 x 5 radians/second
D. 7.3 x 10-5 radians/second