A parallel-plate capacitor with fixed plate area \(A\) and adjustable plate separation \(d\) is filled with an insulating material of dielectric constant \(\kappa\) and dielectric breakdown strength \(E_{\text{max}}\). The breakdown strength represents the maximum electric field magnitude the dielectric can withstand before conducting. For any chosen separation \(d\), the capacitor is charged to the maximum potential difference \(V_{\text{max}}\) it can sustain without exceeding \(E_{\text{max}}\). In the limit as the plate separation approaches zero (\(d \to 0\)), which of the following correctly describes the behavior of the maximum stored charge \(Q_{\text{max}}\) and the maximum stored electrostatic potential energy \(U_{\text{max}}\)?