A hollow cylindrical conductor of inner radius \(a\) and outer radius \(4a\) carries an electric current parallel to its central axis. The current density within the conductor is non-uniform and given by \(J(r) = \dfrac{C}{r}\), where \(C\) is a positive constant and \(r\) is the radial distance from the central axis. Three concentric cylindrical shells within the conductor have radial boundaries from \(a\) to \(2a\) (Region 1), from \(2a\) to \(3a\) (Region 2), and from \(3a\) to \(4a\) (Region 3). Which of the following correctly ranks the total currents \(I_1\), \(I_2\), and \(I_3\) passing through Regions 1, 2, and 3, respectively?