Which of the following statements about valuing a firm using the APV approach is most CORRECT? The value of operations is calculated by discounting the horizon value, the tax shlelds, and the free cash flows before the horizon date at the unlevered cost of equlty. The value of operations is calculated by discounting the horizon value, the tax shields, and the free cash flows at the cost of equity. The value of equity is calculated by discounting the horizon value and the free cash flows at the cost of equity. The value of equity is calculated by discounting the horizon value, the tax shields, and the free cash flows at the cost of equity