In the question given below, a passage is followed by three statements which may or may not be inferred from the passage. Select the correct combination of statements that can be inferred. Recent studies on urban transportation show that the adoption of electric buses has increased significantly in major cities. Governments are offering subsidies and tax benefits to encourage a shift away from diesel-powered public transport due to rising pollution levels. However, several municipal authorities report challenges such as insufficient charging infrastructure, higher upfront costs, and limited technical expertise to maintain electric fleets. Despite these challenges, environmental agencies note measurable reductions in urban air pollution in cities that have deployed electric buses extensively.
I. Government incentives have played a role in promoting the use of electric buses.
II. All cities adopting electric buses have experienced a reduction in pollution.
III. The transition to electric public transport poses operational and financial challenges.