Much to our regret,we cannot accept your claim on the coffee

Much to our regret,we cannot accept your claim on the coffee sets from the batch ______ you complaint.
A.which B.of which C.in which D.on which

B.of which
Much to our regret,we cannot accept your claim on the coffee sets from the batch of which you complaint.
很抱歉,我们不能接受你对你抱怨的那批咖啡具的索赔.
complain＋of 抱怨.

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