6. Elly Company uses a periodic inventory system. Details for the inventory account for the month of January, 2016 are as follows: Units Per unit price Total Balance, 1/1/16 200 $5.00 $1,000 Purchase, 1/15/16 100 5.30 530 Purchase, 1/28/16 100 5.50 550 An end of the month (1/31/16) inventory showed that 150 units were on hand. If the company uses FIFO and sells the units for $9 each, what is the gross profit for the month? a. $1,000 b. $985 c. $900 d. $1,440