When Interferon a Binds to Its Receptor, Which of the Following

When interferon a binds to its receptor, which of the following events does NOT occur?

A) Two interferon receptors associate with each other.
B) One Jak kinase phosphorylates another Jak kinase.
C) Stat1 and Stat2 proteins bind to a phosphorylated receptor.
D) Two Stat proteins bind to each other and form a dimer.
E) The Stat dimer activates the MAP kinase in the cytoplasm.