In the figure shown , a point object O is placed in air on the principal axis. The radius of curvature of the spherical surfaces is `60 cm.` I is the final image formed after all reflections and refractions.

Options

A. If `d_(1) = 120 cm`, then the `'I'_(f)` is formed 'O' for any value of `d_(2)`
B. If `d_(1) =2 40 cm`, then the `'I'_(f)` is formed on 'O' only if `d_(2) = 360cm`
C. If `d_(1) = 240 cm`, then the `'I'_(f)` is formed on 'O' for all value of `d_(2)`
D. If `d_(1) = 240 cm`, then the `'I'_(f)` cannot be formed on 'O'