At a sales volume of 43,000 units, Thoma Corporation's sales commissions (a cost that is variable with respect to sales volume) total $580,500.

To the nearest whole dollar, what should be the total sales commissions at a sales volume of 41,500 units? (Assume that this sales volume is within the relevant range.) (Do not round intermediate calculations.)

$571,770

$560,250

$580,500

$601,482