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.

World War I had (A)unprecedented in the rise of a powerful state capable of (B)intervene millions of people to serve on the front lines and (C)providing economic production and logistics to support them, as well as having (D)resulted authority to (E)mobilizing in the lives of citizens.