Unit material costs for a product are given below: Standard Quantity (kg) Price Price Quantity (kg) 2.5 3 $5.00 $5.50 The material costs and quantities shown above are illustrated on the graph below: A B 5 4 CD Material cost and 3 price 2 1 0 1 2 What does the areas X and Y represents? X Favourable price variance Favourable price variance Unfavourable price variance D Unfavourable price variance Quantity (kg) Actual X Y Y Favourable usage variance Unfavourable price variance Favourable price variance Unfavourable price variance