An uncharged, isolated spherical conducting shell of inner radius \(a\) and outer radius \(b\) surrounds a cavity containing a single point charge \(+q\) initially at the geometric center. An experimenter moves the point charge to an off-center location within the cavity without allowing it to touch the inner conducting wall. Which of the following correctly describes and explains the effect of this displacement on the electric field in the region \(r > b\) outside the shell?