Which of the following accurately describes the concept of diluted EPS?

Diluted earnings per share (EPS) is a measure that provides insight on the potential reduction in earnings available to each share of common stock due to the existence of convertible securities, options, or other instruments that can be converted into common shares. The correct answer accurately states that diluted EPS assumes the conversion of all dilutive securities into common stock. This means that when calculating diluted EPS, the total number of shares is increased to include those that would be issued if all dilutive securities were converted, reflecting a more conservative view of earnings available to common shareholders.

This calculation can help investors understand the worst-case scenario regarding earnings dilution, giving a clearer picture of a company's true performance when potential conversions are taken into account.

Other options are less relevant: calculating diluted EPS involves much more than just preferred stock dividends; it does account for potential dilutive effects; and while diluted EPS can be less than or equal to basic EPS, it is not equal to basic EPS in all situations.