A Flywheel Rotating at 12 Rev/s Is Brought to Rest $\pi$

Multiple Choice

A flywheel rotating at 12 rev/s is brought to rest in 6 s.The magnitude of the average angular acceleration of the wheel during this process is:

A) 1/ $\pi$ rad/s²
B) 2 rad/s²
C) 4 rad/s²
D) 4 $\pi$ rad/s²
E) 72 rad/s²