The author refers to charms and quarks (lines 3-4) primarily in order to

(A) demonstrate the similarity between these particles and the gluon
(B) make a distinction between apposite and inapposite terminology
(C) offer an objection to suggestions of similar frivolous names
(D) provide illustrations of idiosyncratic nomenclature in contemporary physics
(E) cite preliminary experimental evidence sup-porting the existence of gluons