The table below shows expected returns and variance-covariance matrix for six stocks. Assume the risk-free rate of return is 2%.

Stock	Exp. Return %	Var-Cov	K	Y	Z	W	U	V
K	8.57	K	112.89	-35.43	20.23	22.18	9.23	-29.73
Y	12.22	Y	-35.43	82.86	0.87	-39.41	-16.10	29.69
Z	8.74	Z	20.23	0.87	158.66	6.01	9.66	-3.10
W	3.54	W	22.18	-39.41	6.01	106.90	4.89	-17.78
U	7.36	U	9.23	-16.10	9.66	4.89	90.87	22.01
V	3.07	V	-29.73	29.69	-3.10	-17.78	22.01	134.25

1. Derive the minimum variance portfolio on efficient frontier. Show the weights, expected return and standard deviation.
2. Construct the tangency portfolio and derive the risk-return equation, i.e., Capital Market Line equation. Show the weights, expected return, standard deviation, and Sharpe Ratio.
3. What combination of the risk-free asset and the tangency portfolio will result in 12% rate of return? What will be its standard deviation?