The Angular Speed of the Hour Hand of a Clock $\frac{1}{7200} \pi$

Multiple Choice

The angular speed of the hour hand of a clock, in rad/s, is:

A) $\frac{1}{7200} \pi$ .
B) $\frac{1}{1800} \pi$ .
C) $\frac{1}{30} \pi$ .
D) 1 800 $\pi$ .
E) 7 200 $\pi$ .