Why Is It Useful for T Cells That Do Not

Why is it useful for T cells that do not recognize self MHC molecules to be removed from the maturing T cell population?

A) T cells unable to recognize self MHC molecules will be unable to bind to cells that present foreign antigens on MHC class I proteins.
B) T cells unable to recognize self will bind and potentially attack, and kill, all the cells of the body.
C) T cells unable to recognize self cannot be stimulated by cytokines released in areas of infection.
D) T cells unable to recognize self will bind too tightly to MHC class I proteins and potentially attack, and kill, all the cells of the body.