Problem 6-4 Examining Cost Behaviour; High-Low Analysis; Contribution Margin Income Statement (LO1 - CC1, 3, 6; LO2 - CC9; LO3 - CC12) Morrisey \& Brown, Ltd., of Sydney, Australla, Is a merchandising firm that is the sole distributor of a product that is increasing in popularity among Australlan consumers. The company's income statements for the three most recent months follow. 2-a. Using the high-low method, separate each mlxed expense into varlable and fixed elements. 2-b. Using the high-low method, state the cost formula for each mixed expense. (Note: Morrisey \& Brown, Ltd.'s Australlan-formatted income statement has been recast into the format common in Canada. The Australlan dollar is denoted by A$.) Required: 1. Identify each of the company's expenses (Including cost of goods sold) as being varlable, fixed, or mixed. statement