The following table shows the expected return for each of the 3 stocks. It also shows the set risk level of 1.1% X ER 0.004078 0.00558 -0.00223 y Z Weights 0 0.4507 0.5492 1 ??? 0.00012 ERP Variance Portfolio Std. deviation Portfolio 0.011 QUESTION 3 (6 marks): 3a) Calculate the expected return of the portfolio (ERP) 3b) If this portfolio is optimal, then what can you conclude about its ERP? 3c) How is the ERP at a specific level of risk achieved in other words, what allows ERP at a specific level of risk to differ from the expected portfolio return at a different level of risk