A – Retained earnings: When you value equity by discounting cash flows to equity, the result already represents the total value of equity. You don’t then add book retained earnings on top – that would double-count equity.

B – Deducting $400m for the bond: With a FCFE valuation you do not deduct the value of debt at all – the cash flows are already after interest and principal. So deducting the bond is wrong, and in any case they used nominal value ($400m) instead of market value ($380m).

C – Using WACC: Cash flows to equity must be discounted at the cost of equity, not at WACC. WACC is used only when discounting free cash flow to the firm.

Using cash flows to equity (D) is fine, and deducting replacement capex (E) is correct because only free cash after maintaining assets belongs to shareholders.