A business notices that its net income has decreased despite an increase in revenue over two consecutive years. Why does a comparative income statement help in this scenario?

This statement is incorrect because a comparative income statement explicitly includes figures from previous years to facilitate year-over-year analysis. Rather than ignoring past earnings, it provides a comprehensive view of the company's financial performance over time, making it easier to identify trends and variances.

This option is misleading, as a comparative income statement typically separates revenues and expenses into distinct categories rather than combining them into a single total. This separation is essential for detailed analysis, as it helps stakeholders evaluate operational efficiency and profitability.

This statement is inaccurate since a comparative income statement includes all relevant expenses, including the cost of goods sold. Removing such costs would distort the financial picture and hinder the analysis of profitability, as these costs are integral to determining gross and net income.