e$.$ If Local Co$.$ had interest expense of $$790,000,$ how would that affect each of its margins? $($Select the best choice below.$)$

A$.$ Only the operating margin accounts for interest expense, so both the gross and profit margins will be unaffected.

B$.$ Only the net profit margin accounts for interest expense, so both the gross and operating margins will be unaffected.

C$.$ Only the gross margin accounts for interest expense, so both the net profit and operating margins will be unaffected.

D$.$ Both the gross and operating margins will be affected, but the net profit margin will be unaffected.

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