Speedy Printing manufactures soft cover books. For January, the following information is available:

Budgeted market size (units) 125,000Budgeted market share 18%Budgeted average contribution margin per unit $1.20Actual market size (units) 100,000Actual market share 19%Actual average contribution margin per unit $1.22

Required:Compute the market-share variance, the market-size variance, and the sales-quantity variance in terms of the contribution margin.