Russo Corporation manufactured 23,000 air conditioners during November. The overhead cost-allocation base is $35.25 per machine-hour. The following variable overhead data pertain to November: Actual Budgeted Production 23,000 units 25,000 units Machine-hours 11,425 hours 12,500 hours Variable overhead cost per machine-hour $35.00 $35.25 What is the total variable overhead variance? (Hint: to compute the machine-hours allowed per unit produced, divide the budgeted machine-hours by the budgeted production.) O A. $2,643.75 favorable B. $2,643.75 unfavorable C. $5,500.00 favorable D. $5,500.00 unfavorable