In the face of consumer demands, many agricultural companies in this country have stopped growing genetically modified strains of some of their crops and resumed growing unmodified strains of those crops. Clearly, less genetically modified produce is being farmed in this country as a result of this switch than would have been farmed if those companies had continued to produce the genetically modified variants.
Which of the following, if true, most strengthens the argument above?
【选项】
Many of the farms that have switched at least partly to the unmodified crops have increased their output.
选项是否正确？