Bantu Ltd's actual production for the period required 2,100 standard direct labour hours. Actual variable overhead for the period was $10,950. Actual direct labour hours worked were 2,050. The budgeted variable overhead rate is $5 per direct labour hour. Actual fixed overhead costs for the period was $14,800. The budgeted fixed overhead was $14,450. The budgeted fixed overhead rate was $7 per direct labour hour. Required: a. What was the variable overhead spending and efficiency variances? (4 marks)