Answer: A.) Contribution Margin analysis
Explanation: The contribution margin analysis could be explained as an analytical tool in accounting which helps managers in observing variation or differences in the budgeted and actual contribution margin of a product. The contribution margin is used to determine the revenue made on a product after deducting the fixed cost incurred in it's production. It is also used to evaluate the performance of individual product derived from the amount of residual profit after deducting necessary production cost.