Hardy, Inc

Hardy, Inc., has budgeted sales in units for the next five months as follows: 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 1,640 units. The company needs to prepare a production budget for the next five months.
-The total number of units produced in July should be:

A) 7,240 units
B) 6,620 units
C) 6,300 units
D) 5,980 units