12. Which statement about portfolio diversification is correct? Proper diversification can partially eliminate systematic risk. The risk-reducing benefits of diversification do not occur meaningfully until at least at least 100 individual securities have been purchased Because diversification reduces a portfolio's total risk, it necessarily reduces the portfolio's expected return. Typically, as more securities are added to a portfolio, total risk would be expected to decrease at a decreasing a. b. c. d. rate. None of the above. e