Three thin, converging biconvex lenses—Lens 1, Lens 2, and Lens 3—are manufactured with identical geometric dimensions and surface radii of curvature. The lenses are made of three different transparent materials with indices of refraction \(n_1 = 1.4\), \(n_2 = 1.6\), and \(n_3 = 1.8\), respectively. Each lens is placed in air (\(n_{\text{air}} = 1.0\)), and a beam of parallel light rays is directed along the principal axis of each lens. Which of the following correctly ranks the focal lengths \(f_1\), \(f_2\), and \(f_3\) of the three lenses?