A cylindrical region of radius \(R\) contains a spatially uniform magnetic field directed parallel to the cylinder's central axis. The magnitude of the magnetic field increases at a constant rate \(\dfrac{\Delta B}{\Delta t}\). Which of the following graphs best represents the magnitude of the induced electric field \(E\) as a function of radial distance \(r\) from the central axis, for \(0 \le r \le 3R\)?