Wattan Company reports beginning inventory of $23$ units at $$64$ each. Every week for four weeks it purchases an additional $23$ units at respective costs of $$65,$ $$66,$ $$69,$ and $$74$ 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.ActivityUnitsUnits costCost of GoodsAvailableBeginning Inventory$1$st week purchase$2$nd week purchase$3$rd week purchase$4$th week purchaseUnits available for saleCost of goods available for sale