Turney Company produces and sells automobile batteries, the heavy-duty HD-240. The 2012 sales forecast is as follows. Quarter HD-240 1 5,100 2 7,110 3 8,460 4 10,180 The January 1, 2012, inventory of HD-240 is 2,890 units. Management desires an ending inventory each quarter equal to 50% of the next quarter's sales. Sales in the first quarter of 2013 are expected to be 30% higher than sales in the same quarter in 2012. Prepare quarterly production budgets for each quarter and in total for 2012.