Concord Corporation uses a periodic inventory system. Details for the inventory account for the month of January 2022 are as follows: Units Per unit price Total Balance, 1/1/2022 240 $4 $960 Purchase, 1/15/2022 120 4 480 Purchase, 1/28/2022 120 4 480 An end of the month (1/31/2022) inventory showed that 190 units were on hand. How many units did the company sell in January 2022? O 240 O 290 O 190 O 70