In itss first month of transactions , amaids Co made three purchases of merchandise in the following sequence: 1) 300 units at $6 per unit, 2) 400 units at $8 per unit and 3) 500 units $9 per unit. Assuming here are 200 units on hand at he end of the period, compute gthe cost of the ending inventory under

a) FIFO and

b) LIFO. Amaids uses a periodic inventory system.