In September, Larson Inc. sold 40,000 units of its only product for $240,000 and incurred a total cost of $225,000, of which $25,000 is fixed costs. The flexible budget for September showed total sales of $300,000. Among variances of the period were: total variable cost flexible-budget variance, $8,000U; total flexible-budget variance, $63,000U; and, sales volume variance, in terms of contribution margin, $27,000U. The total number of budgeted units reflected in the master budget for September was:
a) 36,000 units.
b) 40,000 units.
c) 45,000 units.
d) 48,000 units.
e) 50,000 units.