3. The graph below shows the angular acceleration α of a bicycle tire. During the four-second time interval for which this graph is drawn, we can conclude that ______. (A) the angular velocity of the wheel did not change (B) the angular momentum of the wheel about an axis through its center did not change (C) the angular velocity of the wheel increased by 8 rad/s (D) the angular velocity of the wheel increased by 12 rad/s (E) the angular velocity of the wheel increased by 16 rad/s