I need help with this question.

Harden Inc. has budgeted sales munits for the next five months as follows June July August September October 8,90 units 7,200 units 9,000 units 8,700 units 6,800 units Past expenence has shown that the ending inventory for each month should be equal to 10% of the next month's soles in units. The inventory on May production budget for me next five months contained 90 units. The company needs to prepare The beginning inventory for September should be Muuple Choice 680 oooo 900 units