Callahan Auto Parts Comparative statements for Callahan Auto Parts are shown below. Callahan Auto Parts Comparative Income Statements For the years ended December 31 Sales Cost of goods sold Gross profit Operating expenses Operating income Year 3 Year 2 Year 1 $14,800 $13,229 $13,994 8,225 8.661 6,575 4,568 5,619 8,375 3,664 $2.911 3.576 3,487 $992 $2.132 Calculate trend percentages for all income statement amounts shown and comment on the results. Use Year 1 as the base year.