Keith 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 2,000 500 400 200 3,100 Revenue $ 10,000 $ 20,000 $ 10,000 $ 20,000 $ 60,000 Variable departmental costs 6,000 13,000 4,200 4,800 28,000 Fixed costs 5,000 2,000 3,000 7,000 17,000 Net income (loss) $ (1,000 ) $ 5,000 $ 2,800 $ 8,200 $ 15,000 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).) $ $