$1.$ Perform the horizontal analysis of the Cost of Goods Sold included in the Comparative Income Statement of Kimball Corporation, provided with this task. In the analysis, you need to include:

a$.$ the difference, increase, or decrease in relation to the base year and

b$.$ the proportion or percentage.

$2.$ Perform the horizontal analysis of Income Tax Expense included in the Comparative Income Statement of Kimball Corporation, provided with this assignment. In the analysis, you need to include:

a$.$ the difference, increase, or decrease in relation to the base year, and

b$.$ the proportion or percentage.

$3.$ Perform the horizontal analysis of Interest Expense included in the Comparative Income Statement of Kimball Corporation, provided with this assignment. In the analysis, you need to include:

a$.$ the difference, increase, or decrease in relation to the base year, and

b$.$ the proportion or percentage.