GMAT Critical Reasoning (CR) | Bottom trawling is a type of deep-sea fishing that involves

Hi mikemcgarry and other experts,
For option C , I have another approach but I am not sure whether it is valid, would you please help check ?

The question states which can support that use of new nets will arrival it's exception.
I think this stem need a strengthen based on use of new nets, so I wont consider whether fishers use new nets or not.

C indicates it is likely for fishers to use new nets because it is cheap,
So I did not pick up C.

my approach is far away with yours, I am not sure
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