In the ______ , all costs are ___ A 0 long run, variable B 0 short run, variable C G) short run, xed D 0 long run, xed

I need those answers below and explanations.. Thank you very much for your help!

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In the ______ , all costs are ___ A 0 long run, variable B 0 short run, variable C G) short run, fixed D 0 long run, fixed