In each question, one sentence is given. In each sentence, certain words are in bold and numbered from A to E. Below the sentences 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.

Reba Benschoter (A) readied herself to speak before the crowd of (B) potential from industry, (C) academia, and government who had (D) gathered to talk about the transformative (E) luminaries of new media in medicine.