Question: Citigroup SmithBarney (Dollar): Petrobrás' WACC. Citigroup regularly performs a U.S. dollar-based discount cash flow (DCF) valuation of Petrobrás in its coverage. That DCF analysis requires the use of a discount rate based on the company's weighted average cost of capital. Evaluate the methodology and assumptions used in the 2003 Actual and 2004 Estimates of Petrobrás' WACC below.