Which of the following best illustrates a dominant business firm?

Fractal Products is a company, whose three strategic business units contribute equally to the total corporate revenue.

Riva Inc. is a luxury brand that derives $75$ percent of its revenues from its apparel line and $25$ percent of its revenues from its premium furniture business unit.

Asphalt Autos is a company whose revenues solely come from selling automobiles.

Alliance Metals is a firm that derives $50$ percent of its revenues from its steel unit and another $50$ percent from its automobile businesses.