Final answer:
The volume variance for sales revenue is favorable, and the flexible budget variance for sales revenue is also favorable.
Step-by-step explanation:
The correct statement is c) The volume variance for sales revenue is favorable, and the flexible budget variance for sales revenue is also favorable.
The volume variance for sales revenue measures the difference between the actual sales volume and the budgeted sales volume, multiplied by the budgeted selling price. If the actual sales volume is higher than the budgeted sales volume, resulting in more revenue, the variance is considered favorable.
The flexible budget variance for sales revenue compares the actual sales revenue to the flexible budgeted sales revenue. If the actual sales revenue exceeds the flexible budgeted sales revenue, the variance is favorable.