The table below shows the standard deviations and correlation coefficients of the annual returns for five stocks: A, B, C, D, and E. (Please Included the solutions step by step)

Correlation coefficients	A	B	C	D	E
A	1.00	0.28	0.46	-0.02	0.36
B	0.28	1.00	0.08	-0.09	0.21
C	0.46	0.08	1.00	-0.04	0.33
D	-0.02	-0.09	-0.04	1.00	0.18
E	0.36	0.21	0.33	0.18	1.00
Standard deviation (%)	20.3	14.0	34.5	42.5	44.5

a. Calculate the variance of the annual return on a portfolio with equal investments in each stock. b. Calculate the beta of each stock in the table relative to a portfolio with equal investments in each stock. c. Suppose you can invest in only two of the stocks in the table. What is the safest attainable portfolio under this restriction?