Many recent articles have discussed the possibility of smart grids as an environmentally friendly power supply. What is the reason that smart grids have not yet been implemented? (Select all that apply.) Group of answer choices The Distribution and Transmission sides do not share data. The integration of energy harvesting techniques, if not tackled optimally, can result in increased cost and may even be harmful to the environment. Grids cannot support the installation of sensors in each and every line. Sensors are not fast enough to detect changes in the grid