2-a) Calculate the expected return and standard deviation of a portfo.o invested in the following two risky assets. (4/. ) Security W E() A 40% 10 18.63 B 60%5 8.27 Correlation coefficient = -0.49 b) Calculate the expected return of a complete portfolio invested equally in the risky portfolio calculated previously (a) and risk-free asset with 4% return. Compare your results? (21. )