In September, Numbers incorporated sold 41700 units of its only product for $427000 and incurred a total cost of $395.000, of which 542.000 was fixed costs. The flexible budget for September showed total sales of $170,000 Among vartances of the period were total variable cost flexible budget variance, 583000, total flexble-budget variance, 582,0000, and sales volume variance, in terms of contribution margin $44.0000 The total amount of variable costs in the flexible budget for September was Multiple Choice O $262,900. O $344,900 O $353,000. $361,100. O $426,900