Critical Reasoning (CR) | Unlike the wholesale price of raw wool, the wholesale price

(C) The operating costs of the average retail clothing store have remained constant during the last year.

Can someone explain more on this option? I am not clear with the operatingcosts?

My understanding of the argument -
Basically, the wholesale price ofraw cotton has fallenconsiderably in the last Year. As per the conclusion, the retail price ofcotton clothing at retail clothing stores will inevitably fall.

Now, where does this operating costs comes into picture? I am not able to link
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