Which of the Following Characteristics Permits Activated CD8 T Cells

Multiple Choice

Which of the following characteristics permits activated CD8 T cells to destroy any cell type harboring viable and replicating pathogens such as viruses?

A) The pathogen is located in extracellular spaces.
B) CD8 T cells enable macrophages to kill intracellular pathogens.
C) Pathogen-derived peptides bind MHC class I molecules in endocytic vesicles found ubiquitously in most cell types.
D) MHC class II molecules are expressed ubiquitously by most nucleated cells.
E) MHC class I molecules are expressed ubiquitously by most nucleated cells.