Which of the Following Is Not a Correct and Necessary

Multiple Choice

Which of the following is not a correct and necessary step in the generation of a cell-mediated response?

A) Antigen presenting cells are activated by pattern recognition.
B) Antigen presenting cells present antigen to helper T cells.
C) Antigen presenting cells activate cytotoxic T cells.
D) Helper T cells release cytokines that stimulate activate cytotoxic T cells.
E) Cytotoxic T cells recognize their specific antigen on the surface of infected cells.