With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running surface pumps and not for submersible pumps. 2. Solar power can be used for running centrifugal pumps and not the ones with piston. Which of the statements given above is/are correct?

Option (d) is correct because solar energy is a versatile power source that can drive any type of electric motor, making it compatible with surface, submersible, centrifugal, and piston pumps alike. The other options are incorrect because they use unnecessarily restrictive language ("not") to suggest technical limitations that do not exist in modern solar pumping systems. The core concept tested is the practical application of Solar Photovoltaic (SPV) technology in irrigation and the general versatility of renewable energy sources.