Indicate which class of immunoglobulin (IgA, IgD, IgE, IgG, or IgM) best corresponds to each characteristic listed

Question:

Indicate which class of immunoglobulin (IgA, IgD, IgE, IgG, or IgM) best corresponds to each characteristic listed below (more than one may be implicated by each description).
(a) First to be secreted in response to an antigen
(b) Implicated in allergic reactions
(c) Occurs in the intestinal tract
(d) Contains J chains
(e) The most abundant antibody