The Interaction Between Natural Killer (NK)cells and Macrophages Amplifies the Innate

The interaction between natural killer (NK) cells and macrophages amplifies the innate immune response.Rearrange the following into the order of events during this amplification.Which is the last event?

A) Macrophage production of cytokines TNF and IL-12 increases
B) Increased production of IL-2 by NK cells
C) NK cells produce gamma interferon (IFN-?)
D) Proliferation of NK cells