26. Dark History Inc. currently manufactures a wicket which is part of its main product. Costs per unit are as follows: Xann Company has contacted Dark History Inc. with an offer to sell it 5,000 wickets for $18 each. Of Dark History's $8 per unit fixed cost, \$5 per unit is unavoidable. Should Dark History make or buy the wickets and why? Buy because the cost savings is $15,000. Buy because the cost savings is $5,000. Make because the cost savings is $10,000. Make because the cost savings is $5,000