AB Ltd.s gross purchases were $18,200, net purchases account for an average 10% discount on all items purchased and 5% of items were returned due to wrong specifications during the year. Also during the year the net sales were $16,832. Required 1: If beginning and ending inventory are zero (Just in time), ABs cost of good solf for the period must have been: $ Required 2: ABs Purchase Return and Allowances for the period must have been: $ Required 3: ABs Purchase Discounts for the period must have been: $ Required 4: ABs Net Puchases for the period must have been: $