A uniform bowling ball is launched along a rough, horizontal lane with an initial forward center-of-mass velocity \(v_0\) and an initial backspin of angular speed \(\omega_0\). Kinetic friction acts between the ball and the lane until the ball achieves pure rolling motion without slipping. During this slipping interval, which of the following statements correctly describes the total angular momentum of the ball about a fixed point \(P\) on the lane surface, and provides the correct justification?