GMAT Critical Reasoning (CR) | Re: The country of Baurisia has, until now, been self-sufficient

I'm little bit confused about option C.to weaken the argument we need to find two alternate way.One way is to import meat or another way is to produce more grain.Now both C and D are talking about importing meat but C is a little bit masked and D is direct.So why C is not the right choice??

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