What are the advantages and disadvantages of "combined cycle power plants" compared to traditional thermal power plants? A) Combined cycle power plants use both gas and steam turbines to generate electricity, offering higher efficiency and lower emissions compared to traditional thermal power plants. Advantages include improved fuel utilization and reduced greenhouse gas emissions. Disadvantages include higher initial costs and complexity in operation. B) Combined cycle power plants primarily increase the harmonic distortion in power systems. C) Combined cycle power plants measure the power factor of electrical grids. D) Combined cycle power plants focus solely on thermal energy storage.