QUESTION ONE a. When adding securities into a portfolio, we are reducing the total risk and expected return of the portfolio." Discuss the validity of this statement. (15 marks) The systematic risk of a portfolio can be reduced through diversification. Discuss the validity of this statement. (15 marks) b. c. Given the following information: Share A B D Investment (S) 20 million 40 million 10 million 30 million Share's Beta 0.90 1.40 2.00 1.20 i. Determine the portfolio's beta coefficient (4 marks) ii. iii. Determine the equation for the Security Market Line (SML) if the risk-free rate is 8 percent and the return on the market portfolio is 15 percent, (3 marks) Determine the return that this investment should be earning if its risk-return pattern indicates that it lies on the SML. (4 marks) Discuss whether a security E should be purchased if it has a beta of 1.80 and an expected return of 19 percent. Justify your answer. (9 marks) iv