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Sandhill Inc. has 4 product lines: sour cream, ice cream, yogurt, and butter. Demand of individual products is not affected by changes in other product lines. 30% of the fixed costs are direct, and the other 70% are allocated. Results of June follow: Sour Cream Ice Cream Yogurt Butter Total Units sold 2,400 600 480 240 3,720 Revenue $12,000 $24,000 $12,000 $24,000 $72,000 Variable departmental costs 7,200 15,600 5,040 5,760 33,600 Fixed costs 6,000 2,400 3,600 8,400 20,400 Net income (loss) $(1,200) $6,000 $3,360 $9,840 $18,000 Prepare an incremental analysis of the effect of dropping the sour cream product line. (Enter negative amounts using either a negative sign preceding the number e.g. -45 or parentheses e.g. (45).)