GMAT Critical Reasoning (CR) | Re: Scientists have made genetic modifications to cotton to

Using Genetically Modified Cotton does not yield in general higher revenue than using Regular cotton because the savings on the pesticides isn't a lot + the seeds cost higher.

To make this comparison we need to know

1) How much more are the seeds than the regular seeds
2) We need an equal comparison between the revenue from GMO seeds and non GMO seeds.

Option D satisfied 2).

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