In each question, one sentence is given in which certain words are in bold and numbered from A to E. Below the sentence are given five options with  possible pairs of interchange of those bold words. Choose the pair(s) of words which are needed to be interchanged to make the sentence grammatically correct and meaningful.

Wisdom can be seen as (A)acquire an (B)accumulation of knowledge, experience, and contemplation, and by this (C)definition, older age may be (D)necessary, or at least helpful, to (E)reflecting true wisdom.