Donuts Incorporated plans to sell 35,000 units of product D during April and 45,000 units during May. Sales of product D during March were 25,000 units. Past experience has shown that end-of month inventory should be equal to 40% of the next month's sales. On March 31, this requirement was met. Based on these data, how many units of Product D must be produced during the month of April? 53,000 35,000 31,000 39,000