The following is monthly budgeted cost and activity information for two activities in the purchasing department of X Company: Activity Supplier relations Invoicing Variable Costs $9,360 $8,300 Fixed Costs $16,100 $27,500 Cost Driver 390 suppliers 830 invoices In November, actual costs and activity were as follows: Activity Supplier relations Invoicing Total Costs $24,379 $36,370 Driver Amount 338 suppliers 828 invoices What was the flexible budget variance for the supplier relations activity for November (assume that favorable variances are positive numbers and unfavorable variances are negative numbers)? A: $-16,267|| OB: $-15,019 OC: $-8,279| OD: $-167|| OE: $0 OF: $1,081