QS 5-4 (Algo) Computing goods available for sale LO P1 Wattan Company reports beginning inventory of 28 units at $39 each. Every week for four weeks it purchases an additional 28 units at respective costs of $40,$41,$44, and $49 per unit for weeks 1 through 4. Compute the cost of goods available for sale and the units available for sale for this four-week period. Assume that no sales occur during those four weeks