Which of the following are true? i. Systematic risk cannot be diversified away. ii. Unsystematic risk cannot be diversified away. fii. According to the CAPM, expected returns are related to systematic risk but not unsystematic risk. iv. According to the CAPM, expected returns are related to unsystematic risk but not systematic risk. ii and iv, but not i ori Oi and iv, but not ii or ili Oi and ili, but not ii or iv Oil and ill, but not i oriv