The following data is given for the Bahia Company: Budgeted production 1,000 units Actual production 980 units Materials: Standard price per pound $2.00 Standard pounds per completed unit 12 Actual pounds purchased and used in production 11,800 Actual price paid for materials $23,000 Labor: Standard hourly labor rate $14 per hour Standard hours allowed per completed unit 4.5 Actual labor hours worked 4,560 Actual total labor costs $62,928 Overhead: Actual and budgeted fixed overhead $27,000 Standard variable overhead rate $3.50 per standard labor hour Actual variable overhead costs $15,500 Overhead is applied on standard labor hours. The factory overhead volume variance is: a. $65U b. $540U c. $540F d. $65F