Lusk company produces and sells 16,100 units of product a each month. the selling price of product a is $31 per unit, and variable expenses are $25 per unit. a study has been made concerning whether product a should be discontinued. the study shows that $71,000 of the $111,000 in fixed expenses charged to product a would continue even if the product was discontinued. these data indicate that if product a is discontinued, the company's overall net operating income would:

decrease by $54,400 per month

increase by $14,400 per month

decrease by $56,600 per month

increase by $54,400 per month