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.

The (A) tackled climate (B) crisis must also be (C) escalating to (D) protect the oceans from acidification, loss of oxygen and the (E) devastation of coral reefs.