Which of the following statements about investments are true?(more than one option)i. Unsystematic risks

Which of the following statements about investments are true?(more than one option)

i. Unsystematic risks

are usually nor evident in portfolios of more than 25 stocks;

ii. Sensitivity of a stock to systemic risks is measured by a beta-coefficient;

iii. Active investment can be described by strategic allocation of funds following analysis of the past price trends;

iv. Risk cannot be considered as a major consideration in well-diversified portfolios.