lake me to the text Deltech Speakers Inc. manufactures one type of computer speaker. The average selling price is $106 per computer speaker. The average variable cost amounts to $61 per computer speaker. The company's fixed costs are $21,000 per month. Do not enter dollar signs or commas in the input boxes, Round the units to the highest whole number. a) Calculate the monthly volume sales needed to break-even. Break-Even Point (Units): b) Determine the break-even point in sales dollars. Break-Even Point (Dollars): C) If the company's current monthly sales amount is $146,000, what is the margin of safety in dollars and in units? Margin of safety (\$): Margin of safety (units)