Sheridan 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 fined costs are direct, and the other 70% are allocated. Results of June follow: Prepare an incremental analysis of the effect of dropping the sour cream product line. (Enter negotive amounts using either a negative sign preceding the number es. -45 or porentheses es. (45).)