An Object, Starting from Rest at the Origin, Rotates with an Angular

Multiple Choice

An object, starting from rest at the origin, rotates with an angular acceleration given by $\alpha = c + d t ^ { 2 }$ , where $\surd$ is in radians/s², t is in seconds, c = -3.0 rad/s², and d = 0.40 rad/s⁴. At time t = 2.0 s, the rotation (in radians) the object has made is

A) -1.1 rad.
B) 1.1 rad.
C) -4.9 rad.
D) -5.5 rad.