Harris, Inc., has budgeted sales in units for the next five months as follows: June 9,400 units July 7,800 units August 7,300 units September 5,400 units October 4,100 units Past experience has shown that the ending inventory for each month should be equal to 20% of the next month's sales in units. The inventory on May 31 contained 1,880 units. The company needs to prepare a production budget for the next five months. The beginning inventory for September should be: 820 units 1,880 units 1,460 units 1,080 units