单选题 An investor has a portfolio with 10 percent cash, 30 percent bonds, and 60 percent stock. Last year, the cash returns was 2.0 percent, the bonds' return was 9.5 percent, and the stock's return was - 32.5 percent. What was the return on the investor's portfolio?

• A. -7.00%.
• B. -33.33%.
• C. - 16.45%.