#6 15 marks Bernadino Corporation is a multi-product firm. The following information concerns one of its products, the Trinton: Date Transactic Quantity Jan. 1 Beginning 1,000 Feb. 4 Purchase 2,000 Cost $12 18 Feb. 20 Sale 2,500 Apr. 2 Purchase 3,000 23 Nov. 4 Sale 2,000 Instructions Calculate cost of goods sold, assuming Bernadino uses: a. A periodic inventory system and FIFO cost formula b. A periodic inventory system and weighted average cost formula. Round cost per unit to two decimal places. c. A perpetual inventory system and moving-average cost formula. Round cost per unit to two decimal places.Hint-do this one first using the 9 column schedule