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Brussels Chocolate Company produces chocolates in large batches. One batch of chocolate has the following standard costs and amounts: Standard kilograms of sugar 125 Standard cost per kilogram of sugar $1.60 Standard direct labour hours 0.75 Standard direct labour cost per hour $21.00 Brussels Chocolate Company produced 600 batches of chocolates in the most recent month. Actual input costs and per batch usage levels were as follows Actual kilograms of sugar used 126 Actual cost per kilogram of sugar $1.65 Actual direct labour hours 0.8 Actual direct labour cost per hour $20.75 Required: a. What is the total material input rate variance. A. $4,440 favourable B. $5,590 unfavourable C. $3,780 unfavourable D. $3,500 favourable b. What is the total material efficiency variance. A. $2,800 favourable B. $960 unfavourable C. $990 unfavourable D. $1,960 favourable c. What is the total labour rate variance. A. $300 favourable B. $500 unfavourable C. $120 favourable D. $650 unfavourable d. What is the total labour efficiency variance. A. $990 unfavourable B. $630 favourable C. $630 unfavourable D. $690 unfavourable