fast solve plz

Company produces two models of lithium batteries, A and B. The selling price per unit and the variable manufacturing cost per unit for model A are $60 and $35 respectively. The selling price per unit and the variable manufacturing cost per unit for model B are $80 and $38 respectively. The variable selling expense per unit for models A and B are $10 per unit and $12 per unit respectively. Assume that total fixed expenses are $39,600 per month and the expected monthly sales for models A and B are 1,800 units and 450 units respectively. If the sales mix and sales units are as expected, the break-even in sales ($) is: (round figures to the nearest number) O a. 89.239 O b. 65,658 Oc140.800 O d. None of the given answers O e. 97,477