The correct answer is: B. weighted average cost of capital
The weighted average cost of capital (WACC) is a measure of a company’s overall cost of capital, taking into account the different types of financing it uses. It is calculated by weighting the cost of each type of financing by its relative proportion in the company’s capital structure.
The WACC is used as a discount rate in capital budgeting to calculate the present value of future cash flows. It is also used as a benchmark to compare the returns on different investment opportunities.
The WACC is a key concept in corporate finance, and it is used by companies to make decisions about how to finance their operations.
Option A is incorrect because the weighted average cost of interest is the cost of debt financing, not the cost of capital.
Option C is incorrect because the weighted average salvage value is the average of the salvage values of the different assets in a company’s capital structure, not the cost of capital.
Option D is incorrect because the mean cost of capital is not a commonly used measure of a company’s cost of capital.