A student investigates a thin transparent polymer film of uniform thickness \(t\) and index of refraction \(n\) (\(n > 1.0\)) suspended in air. A tunable laser directs light at normal incidence onto the film, and the student measures the wavelengths \(\lambda\) in air that produce constructive interference in the reflected light for several known integer orders \(m\) (\(m = 1, 2, 3, \dots\)). Which of the following identifies the quantities that should be plotted on the vertical and horizontal axes to produce a linear graph passing through the origin, and correctly expresses the film thickness \(t\) in terms of the slope \(S\) of the best-fit line and the index of refraction \(n\)?