Final answer:
The unlevered beta of the company is 0.73. Therefore, the correct option is D.
Step-by-step explanation:
To calculate the unlevered beta, we need to use the formula:
Unlevered Beta = Levered Beta / (1 + (1 - Tax Rate) * Debt/Equity)
Given that the levered beta is 1.10, the tax rate is 25%, and the capital structure consists of 40% debt and 60% equity, we can substitute these values into the formula:
Unlevered Beta = 1.10 / (1 + (1 - 0.25) * 0.40/0.60) = 0.73
Therefore, the company's unlevered beta would be 0.73, which corresponds to option d.