Shanahan Co. of Dublin, Ireland is contemplating a major change in its cost structure. Currently, all of its drafting work is performed by skilled draftsmen. Mike Shanahan the owner, is considering replacing the draftsmen with a computerized drafting system. However, before making the change, Mike would like to know the consequences of the change, since the volume of business varies significantly from year to year. Shown below are CVP income statements for each altemative. a. Determine the degree of operating leverage for each alternative, b. Which alternative would produce the higher net income if sales increased by $300,000 ? c. Calculate the break-even sales and margin of safety ratio at the sales level of $1,500,000 under each alternative. d. Which system has higher operating risk and why? Discuss properly