25. The assets of company X have a beta equal to 1. Assume that the company's debt has a beta equal to 0.5 and that X's equity has a beta equal to 2. Consider an investor who holds 10% of the company's debt and 10% of the company's equity. The beta of the investor's portfolio is equal to 0.25 1 1.25 0.1 0.25 1 1.25 0.1.