Which Is Not a Valid Argument Supporting the Switch from Using

Which is not a valid argument supporting the switch from using fossil fuels to using solar cells to generate our electricity?

A) The conversion reduces environmental damage from the extraction and transport of fossil fuels.
B) The conversion will lower the level of air pollution from sulfur and nitrogen oxides.
C) The conversion can be done quickly,efficiently,and relatively inexpensively if we just put our minds and our will to it.
D) The conversion will reduce the potential for global warming as less carbon dioxide is produced in the generation of electricity.