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 $4 240 Balance, 1/1/2022 Purchase. 1/15/2022 Purchase, 1/28/2022 Total $960 480 480 4 120 120 4 An end of the month (7/31/2022) inventory showed that 190 units were on hand. How many units did the company sell in January 2022 240 70 290 190