If Y = 002 Sin (30x - 400t)(SI Units),the Angular Frequency of the Frequency

Multiple Choice

If y = 0.02 sin (30x - 400t) (SI units) ,the angular frequency of the wave is

A) 30 rad/s
B) 30/2 $\pi$ rad/s
C) 400/2 $\pi$ rad/s
D) 400 rad/s
E) 40/3 rad/s