Which of the Following Statements Is TRUE

Which of the following statements is TRUE?

A) Except for tax-exempt investors and tax-deferred accounts, annual tax payments increase investment returns.
B) The only way to maintain purchasing power over time is to invest in bonds.
C) After adjusting for taxes, long-term bonds consistently outperform stocks.
D) An asset allocation decision for a taxable portfolio that does not include a substantial commitment to common stocks may make it difficult for the portfolio to maintain real value over time.
E) None of these are correct.