Doubt- LSAT Critical Reasoning Question (Preptest 84)

Hello everyone!
I was having some trouble figuring out the answer, and zeroed in on Option B but it seems the answer is C

Could someone explain the answer?

B doesn’t eliminate the fact that Jason does buy from kellys and kellys buy from megfarm which uses chemical pesticides in all its crop

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Thanks for commenting!
I’ve assumed Yu’s claim to be- “Jason’s restaurant has food that contains products grown with chemical pesticides”
Is this the right claim?
Because if it is then option C does not imply that Jason buys stuff from Kelly’s Grocery that has a label of “grown without chemical pesticides”