Why Won't it Stop Raining, Inc. (WSR, Inc.) manufacturers rain boots. Under normal circumstances, WSR, Inc. produces between 5,000 - 10,000 pairs of boots. Their cost behavior equation has been determined to be: total costs = ($18 x units) + $180,000. Which of the following production volumes would the cost behavior equation not be an accurate and reliable estimate of total costs? Why Won't it Stop Raining, Inc. (WSR, Inc.) manufacturers rain boots. Under normal circumstances, WSR, Inc. produces between 5,000 - 10,000 pairs of boots. Their cost behavior equation has been determined to be: total costs = ($18 x units) + $180,000. Which of the following production volumes would the cost behavior equation not be an accurate and reliable estimate of total costs? 8,000 units 6,000 units 12,000 units 9,500 units