The managers of Adamson Apple Company are considering dropping one of their product lines. The product line typically has the following revenue and costs: Sales $$100,000$ Variable costs $80,000$ Contribution margin $20,000$ Fixed costs $25,000$ Operating loss $(5,000)$ If the product line is discontinued $,$ $$4,000$ of the fixed costs would be avoided $.$ Also, the freed$-$up capacity would generate $44,000$ of additional contribution margin from the expansion of other product line. If Adamson discontinues the product line, the effect on overall income will be a a $.$ $$12,000$ decrease b $.$ $$8,000$ decrease. $.$ $ $9,000$ increase $.$ d $.$ $$3,000$ increase.