A corporation produces and sells 10,000 units of computer mouse Model B each month. The selling price of computer mouse Model B is $10 per unit (per mouse) Variable expenses are $4 per unit. A study has been made concerning whether the computer mouse Model B should be discontinued. The study shows that $30,000 of the $100,000 in monthly fixed expenses charged to computer mouse Model B would not be avoidable even if the product was discontinued. If the computer