An incident photon of wavelength \(\lambda_0\) collides elastically with an electron that is initially at rest. The photon scatters at an angle \(\theta\) relative to its original trajectory with a new wavelength \(\lambda'\), as shown in the diagram. Which of the following graphs best represents the wavelength shift \(\Delta \lambda = \lambda' - \lambda_0\) as a function of the scattering angle \(\theta\) for angles from \(0^\circ\) to \(180^\circ\)?