The main irony of "The Moment the Gun Went off" is option D. A white person is a victim of apartheid.
The author of "The Moment the Gun Went off" is Nadine Godimer. The author used irony in her writing in order to convey the message she desired. Irony is understood as a literary technique, rhetorical device, or event in which what appears, on the surface, to be, actually, differs from what it is.