A coaxial cable consists of a long, thin, straight inner wire carrying a steady current \(I\) out of the page, surrounded by a concentric, thin cylindrical outer conducting shell of radius \(R\) carrying an equal current \(I\) into the page. Which of the following graphs best represents the magnitude of the magnetic field \(B\) as a function of radial distance \(r\) from the central axis of the cable for \(r > 0\)?