Proposal: Nitrous oxide and carbon dioxide are greenhouse gases that do not allow heat to escape into space. When the amount of greenhouse gases in the atmosphere is too high, the result is climate change, specifically global warming. In order to reduce global warming, emission of greenhouse gases needs to be reduced. Therefore, since both nitrous oxide and carbon dioxide are emitted from long-haul trucks using natural gas, these trucks should be replaced with electric powered trucks.
Objection: The electricity that would power electric-powered trucks comes primarily from power plants that emit carbon dioxide into the atmosphere.
Which of the following, if true, most adequately counters the objection made to the proposal?