What Happens When the T Cell Receptor on a CD8 $\gamma$

What happens when the T cell receptor on a CD8 positive T cell recognizes the peptide displayed in the MHC-I complex on an infected cell?

A) It attracts natural killer cells,which kill the infected cell.
B) It releases interferon $\gamma$ which stimulates macrophages to engulf the cell.
C) It releases IL-4 to stimulate the B cells to release antibodies.
D) It releases proteins that kill the infected cell.
E) It releases IL-12 which stimulates the production of Th1 cells.