Which of these statements is true regarding calculating weights for developing a firm$-$wide WACC?

$"$If we are calculating WACC for the firm, then equity, preferred stock and debt would be the entire book value of each source of capital."

$"$If we are calculating WACC for the firm, then equity, preferred stock and debt would be the entire market value of each source of capital."

$"$If we are calculating WACC for a project, then equity, preferred stock and debt would be the entire book value of each source of capital."

$"$If we are calculating WACC for a project, then equity, preferred stock and debt would be the entire market analyst estimated value of each source of capital. $"$

Weights are not required to calculate a firm's WACC

Assign each source of capital an equal weighting $.$