An underwater observer looks upward toward the flat surface of a calm body of water with index of refraction \(n > 1\). The observer notices a bright circular field of view overhead spanning a cone of half-angle \(\theta_c = \arcsin(1/n)\) (Snell's window) containing the entire above-water hemisphere, while the surface outside this cone reflects the underwater surroundings. Which of the following correctly analyzes the origin and behavior of the light reaching the observer's eye from viewing angles inside (\(\theta < \theta_c\)) versus outside (\(\theta > \theta_c\)) this cone relative to the surface normal?