Detailed Answer
Answer (D) is correct. Vertical, common-size analysis compares the components within a set of financial statements. A base amount is assigned a value of 100%. For example, total assets on a common-size balance sheet and net sales on a common-size income statement are valued at 100%. Common-size statements permit evaluation of the efficiency of various aspects of operations. An analyst who states that advertising expense is 2% of sales is using vertical, common-size analysis.