The Fortise Corporation manufactures two types of vacuum cleaners, the Victor for commercial building use and the House-Mate for residences. Budgeted and actual operating data for the year 2020 were as follows: Static Budget Number sold Contribution margin Actual Results Number sold Contribution margin Victor 6,000 $1,560,000 House-Mate Victor 5,500 24,000 $3,120,000 House-Mate Total 30,000 $4,680,000 Total: $1,400,000 36,000 $4,130,000 41,500 $5,530,000 What is the total sales-mix variance in terms of the contribution margin? (Round any intermediary calculations to the nearest whole percentage.) OA. $273,000 favorable OB. $377,650 unfavorable Oc. $755,300 unfavorable OD. $1,132,950 favorable