Frodic Corporation has budgeted sales and production over the next quarter as follows: The company has 4700 units of product on hand at July 1. 10% of the next month's sales in units should be on hand at the end of each month. October sales are expected to be 78,500 units. Budgeted sales for September would be (in units): 71,500 units 69,550 units 62,000 units 71,000 units