$1.$ Allstate Sporting Goods started April with an inventory of $10$ sets of golf clubs that cost a total of $$1,500.$ During April, Allstate purchased $20$ sets of clubs for $$3,200.$ At the end of the month, Allstate had six sets of golf clubs on hand. The store manager must select an inventory costing method, and he asks you to tell him both cost of goods sold and ending inventory under these two accounting methods, assuming the periodic system is used.

a$.$ Weighted$-$average cost.

b$.$ FIFO