Which interleukin responsible for producing IgE from B cells

Which interleukin responsible for
producing IgE from B cells
a) IL 1
b) IL 3
c) IL 4
d) Both B & C
Correct Answer - C
Answer- C, IL 4
IgE is produced by plasma cells located in lymph nodes draining the
site of antigen entry or locally, at the sites of allergic reactions, by
plasma cells derived from germinal centers developing within the
inflamed tissue.
IgEantibody production requires TH2 cells that produce interleukin-4
(IL-4) and IL-13 and it can be inhibited by TH1 cells that produce
interferon-γ (IFN-γ).