Barley Enterprises has budgeted unit sales for the next four months as follows: October 4,800 units November 5,800 units December 6,400 units January.r 5,200 units The ending inventory for each month should be equal to 15% of the next month's sales in units. The inventory on September 30 was below this level and contained onlyr 600 units What is the desired ending inventory for December? Select one: C} a. ?80 units. 0 b. 950 units. 0 c. 690 units. C} d. 870 units