The following is monthly budgeted cost and activity information for two activities in the purchasing department of X Company Activity Variable costs Fixed Costs Cost Driver Supplier relations $5,670 $15,600 210 suppliers Invoicing $9,960 $29,300 830 Invoices In November, actual costs and activity were as follows: Activity Total Costs Driver Amount Supplier relations $19,392 172 suppliers Invoicing $39,025 819 invoices What was the flexible budget variance for the invoicing activity for November (assume that favorable variances are positive numbers and unfavorable variances are negative numbers)? Al S-29.197 3: 1-29,065 CS-9,725 D: 50 E: $103 F: $235 Triano