It costs Carla Vista Company $$7$ of variable costs and $$3$ of fixed costs to produce its product at full capacity. However, the company currently has unused capacity. The product sells for $$15.$ Sandhill Company offers to purchase $3540$ units at $$9$ each. Carla Vista will incur special shipping costs of $$2\mathrm{.}50$ per unit. If the special offer is accepted and produced with unused capacity, net income will

increase $$7080.$

increase $$1770.$

decrease $$7080.$

decrease $$1770.$