Morrisey \& Brown, Ltd., of Sydney, Australia, is a merchandising firm that is the sole distributor of a product that is increasing in popularity among Australian consumers. The company's income statements for the three most recent months follow: (Note: Morrisey \& Brown, Ltd.'s Australian-formatted income statement has been recast into the format common in Canada. The Australian dollar is denoted by A$.) 2-a. Using the high-low method, separate each mixed expense into variable and fixed elements. 3. Redo the company's income statement at the 5,000-unit level of activity using the contribution format. 4. Assume that the company's sales are projected to be 4,500 units in the next quarter. Prepare a contribution margin income statement