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Pet Food Inc. has two product lines: Cat food and Dog food. Contribution margin income statement data for the most recent year follow: Total Cat Food Dog Food Sales revenue $415,000 $330,000 $85,000 Variable expenses $62,000 $22,000 $40,000 Contribution margin $353,000 $308,000 $45,000 Fixed expenses $98,000 $46,000 $52,000 Operating income (loss) $255,000 $262,000 $(7,000) Assuming total fixed costs remain unchanged, how would discontinuing the Dog food line affect operating income? O A. Increase in total operating income of $210,000 O B. Decrease in total operating income of $465,000 O C. Decrease in total operating income of $45,000 O D. Increase in total operating income of $7,000