Please provide a specific explanation to this question.

5. Fillmore uses the periodic inventory system. June 1 On hand, 50 units @ $15.00 each $ 750.00 5 Purchased 115 units @ $15.10 each 1,736.50 14 Purchased 75 units @ $15.20 each 1,140.00 Total cost of goods available for sale 3 626.50 30 On hand, 90 units If Fillmore uses the FIFO inventory method, the amount assigned to the June 30 inventory would be: a) $1,354.00 b) $1,366.50 c) $1,590.42 (1) $1,594.00 e) Not determinable from the information given