Three solid conducting spheres \(A\), \(B\), and \(C\) have radii \(R_A = R\), \(R_B = 2R\), and \(R_C = 3R\), respectively, and are located far from one another. The spheres are connected to each other by thin, long conducting wires, and a net positive charge \(Q_0\) is placed on the system. After the system reaches electrostatic equilibrium, which of the following correctly ranks the magnitude of the surface charge densities \(\sigma_A\), \(\sigma_B\), and \(\sigma_C\) on the three spheres?