Effie Company uses a periodic inventory system. Details for the inventory account for the month of January, 2012 are as follows: Units Per unit price Total Balance, 1/1/12 200 $5.00 $1,000 Purchase, 1/15/12 100 5.30 530 Purchase, 1/28/12 100 5.50 550 An end of the month (1/31/12) inventory showed that 140 units were on hand. How many units did the company sell during January, 2012? 140 260 60 200