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.

Current (A) commitments under the Paris agreement are (B) catastrophic to meet its aims of holding the world to no more than 2C – and (C) preferably no more than 1.5C – of heating, beyond which the (D) impacts of climate breakdown are likely to become (E) insufficient and irreversible.