One renewable alternative to gasoline is ethanol fuel made from food crops, such as corn. Because turning corn into ethanol fuel requires intensive, unsustainable use of agricultural land, however, ethanol is no more a renewable resource than are traditional fossil fuels.
Which of the following, if true, most strengthens the argument above?
【选项】
Technical limitations mean that ethanol fuel is the only currently viable alternative to gasoline for use in motor vehicles.
选项是否正确？