Q$6.$ Risk and Expected Return of a $3$ Asset Portfolio. Based on the following information regarding Stock Uno, Stock Dos and Stock Tres,

Calculate the expected return and standard deviation for the three$-$asset portfolio assuming the portfolio consists of the following weights:

a$)\frac{1}{3}$ of Uno, $\frac{1}{3}$ of Dos, and $\frac{1}{3}$ Tres $($meaning equal amounts of each stock in the portfolio$).$

b$)50\%$ Uno, $40\%$ Dos and $10\%$ Tres

c$)0\%$ Uno, $0\%$ Dos, $100\%$ Tres

In which portfolio would you choose to invest? Which portfolio would you consider the least desirable portfolio of the $3$ portfolios? Include a few

sentences explaining your responses to both.