10. Which of the following is TRUE concerning diversification? A) As more sec B) As more securities are added to the portfolio, the unsystematic risk of the portfolio rises. C) As more securities are added to the portfolio, the total risk of the portfolio declines to zero. D) As more securities are added to the portfolio, the portfolio risk eventually approaches the level c urities are added to the portfolio, the systematic risk of the portfolio declines. systematic risk in the market