Question $4)$ A circle that is at rest at $t=0$ and has a moment of inertia $I=20((kg)*m^2)$ moves with an angular acceleration $=4t(ra\frac{d}{s^2}).$ Here $t$ is in seconds. What is the power on the circle in Watts at $t=2(s)?$

$1280$

B$)2560$

C$)1920$

D$)1080$

E$)640$