Required information [The following information applies to the questions displayed below.] Warnerwoods Company uses a periodic inventory system. It entered into the following purchases and sales transactions for March. For specific identification, units sold include 70 units from beginning inventory, 450 units from the March 5 purchase, 140 units from the March 18 purchase, and 220 units from the March 25 purchase. Required: 1. Compute cost of goods available for sale and the number of units available for sale