Fabio Corporation is considering eliminating a department that has a contribution margin of $29,000 and $71,000 in fixed costs. Of the fixed costs, $13,500 cannot be avoided. The effect of eliminating this department on Fabio's overall net operating income would be:

a decrease of $28,500.

a decrease of $42,000.

an increase of $28,500.

an increase of $42,000.