Question 19 a point) Which of the following are true? When a large number of stocks are combined into a portfolio, systematic risk is mostly diversified away and thus does not play an important role in the risk of the portfolio I When a large number of stocks are combined into a portfolio, unsystematic risk is mostly diversified away and thus does not play an important role in the risk of the portfolio IRL For a portfolio with many securities, the majority of the portfolio's riskis systematic in nature. W. For a portfolio with many securities, the majority of the portfolio's risk is unsystematic in nature. I and I, but not lioriv I and iv, but not ll or hul Hand iv, but not l or wil O Nand w, but not land v