A skater has rotational inertia 5.31 kg·m^2 with his arms outstretched and catches a 147-g baseball moving at 18.7 m/s perpendicular to his arms. What is the angular velocity of the skater after catching the baseball?
a. 2.45 rad/s
b. 3.60 rad/s
c. 4.75 rad/s
d. 5.90 rad/s