A Patient with Melanoma Receives Three Types of Therapy: Surgery

A patient with melanoma receives three types of therapy: surgery, radiation, and interferon. Which of these represents something the immune system uses against cancer as well?

A) Interferon -- cytotoxic T cells and natural killer cells insert interferon into the membranes of tumor cells, creating large pores that burst the cells.
B) Interferon -- T cells and natural killer cells secrete interferon in response to tumor cells
C) Interferon -- In complexes bound with MHC proteins, the interferons indicate the presence of altered tissue to B cells.
D) Radiation -- a class of lymphocytes uses powerful electromagnetic radiation to attack "altered self" cells