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 need to be interchanged to make the sentence grammatically correct and meaningful.

A (A)smart city utilizes (B) an incorporation system of electricity, cooking gas, water supply and ensures ensures the availability of (C)facilities like health, transport, education, security and all, with the (D) integrated of the (E)advanced technologies.