A The words are discussing about the lack of representation on the acronyms.
B Prepositions and other function words are essential to compose an acronym.
C An acronym is a process of word formation constituted by the initial elements of words or phrases and pronounced as a single word.
D FBI is an acronym and the word „of’ is excluded although it belongs to the noun group that FBI stands for.
E The words 'and’, ‘for’ and 'the’ are all function words and are all excluded from the structure of acronyms.