In the sentence, certain words are in bold and numbered from A to E, which are the possible pairs to be interchanged. Choose the pair(s) of words which need to be interchanged to make the sentence grammatically correct and meaningful. 

These (A) insights into systems structures, as well as (B) considerations of democratic governance in which governance should be (C) implications to national governments, and, within them, to State governments, and even to the third tier of city and district governance, have (D) devolved for the role and (E) competencies of a national planning institution for India.