At a sales volume of 32,500 units, Carne Company's sales commissions {a cost that is variable with respect to sales volume) total $526,500. To the nearest whole dollar, what should be the total sales commissions at a sales volume of 31, 200 units? (Assume that this sales volume is within the relevant range.) (Do not round intermediate calculations.) $526,500 $505,440 $516,960 $548,438