13. The wheel on a vehicle has a rotational inertia of 2.0 kg.m . At the instant the wheel has a counterclockwise angular velocity of 6.0 rad/s. an average counterclockwise torque of 5.0 N.m is applied, and continues for 4.0 s. What is the change in angular momentum of the wheel? (A) 12 kg-m? /s (B) 16 kg-m' /s (C) 20 kg-m /s (D) 32 kg.m- /s