GMAT Critical Reasoning (CR) | Re: The irradiation of food kills bacteria and thus retards

I think focus must be on last line . It refutes the claim of proponents of irradiated food based on the ground that it is as bad as cooked food on two grounds. First , there is no point in comparison because most of the irradiated food is meant to be cooked as it is generally eaten raw....thus besides the point.... Second if we do have some food which is also cooked then the proponents are misleading people because then it is not same but as choice E tells the affect is much more ...compounded...Thus
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