Which statement about the cellular immune response is false?
a. t cells have cd8 molecules on their cell surface.
b. cytotoxic t cells destroy infected cells using the protein perforin.
c. t cells recruit cytotoxic t cells and b cells to fight an infection.
d. mhc-ii molecules present bacterial proteins on the cell surface of macrophages.
e. a cd4 molecule on a lymphocyte interacts with an mhc-ii molecule on an antigen-presenting cell.