ABC, Inc., has budgeted sales in units for the next five months as follows: June 7.800units July 6,100 units August 7,900units September 7,600 units October 5,700units Past experience has shown that the ending inventory for each month should be equal to 20% of the next monthis sales in units. The inventory on May 31 contained 1,560 units. The company needs to prepare a production budget for the next five months The beginning inventory for September should be: Select one: O a. 1,520 units O b. 1.140 units 1,560 units O d. 1,580 units