The angular speed of the minute hand of a clock is __________.
Options:
A. $\frac{\pi}{7200} \frac{rad}{s}$
B. $\frac{\pi}{3600} \frac{rad}{s}$
C. $\frac{\pi}{1800} \frac{rad}{s}$
D. $\frac{\pi}{60} \frac{rad}{s}$
E. $\frac{\pi}{30} \frac{rad}{s}$
F. None of the above are correct.