In the question given below, a passage is given followed by statements which may or may not be inferred from the passage. Select the correct combination of statements that can be inferred. Passage: Due to increasing pollution levels in major cities, governments are turning to electric public transport systems. Several cities have already begun replacing diesel buses with electric ones. However, the transition has not been smooth — the lack of adequate charging stations has led to delays in deployment, and the cost of electric buses remains significantly higher than traditional models. Despite these challenges, transport authorities believe that long-term environmental benefits outweigh the initial difficulties. Statements: 1. Some cities have started adopting electric buses as a replacement for diesel buses. 2. The transition to electric public transport is facing infrastructure-related challenges. 3. Electric buses are cheaper to operate than diesel buses.