A flywheel with rotational inertia \(I\) rotates about a fixed axle with an initial angular momentum \(L_0\). At time \(t = 0\), a brake applies a constant opposing frictional torque of magnitude \(\tau_0\) to the flywheel until it comes to rest. Which of the following graphs best represents the angular momentum \(L\) of the flywheel as a function of time \(t\) from \(t = 0\) until the flywheel stops?