In the following question, a sentence is given with certain words in bold. Choose the pair/s of such words which need to be interchanged so as to make the sentence grammatically correct and meaningful.

Research has shown that the (A) increasing of methane through (B) catastrophic in the permafrost in the Arctic region is (C) release at an alarming rate and also holds the (D) potential for abrupt and (E) perforations release.