Ramort Company reports the following for its single product. Ramort produced and sold 20,600 units this year. Direct materials Direct labor Variable overhead Fixed overhead Variable selling and admi Fixed selling and adminis Sales price Ramort doubles its production from 20,600 to 41,200 units while sales remain at the current 20,600 unit level. (a) Compute contribution margin when production is 41,200 units under variable costing. (b) What is the change in contribution margin by increasing production from 20,600 units to 41,200 units under variable costing? when production is 41,200 uni Compute contribution margi points es$41,200peryear$13perunit$15perunit$6perunit$2perunit$65,800peryear$69perunit