Alternative fuels are at every gas station. Gasoline comes from a limited resource. Alternative fuels cause pollution. Gasoline engines are too expensive to make.
Why are alternative fuels being used in some automobiles?

Options:
- Alternative fuels are at every gas station.
- Gasoline comes from a limited resource.
- Alternative fuels cause pollution.
- Gasoline engines are too expensive to make.

Gasoline comes from a limited resource.