Problem 23.1A Horizontal and vertical analysis of income statement and balance sheet. LO 23-1, 23-2 The Stair Company sells computer parts through a retall store that it operates. The firm's comparative Income statement and balance sheet for the years 2019 and 2018 are shown below Required: 1.e. Complete both a hortzontal and a vertical analysis of comparative Income statement for the years 2019 and 2018. a hortzontal and a vertical analysis of comparative balance sheet for the years 2019 and 2018. Analyze: Based on your analysis, which expense category experienced the greatest percentage change