Calculate the expected return and standard deviation for the three$-$asset portfolio assuming the portfolio consists of the following weights:a$)1/3$ of Uno, $1/3$ of Dos, and $1/3$ Tres $($meaning equal amounts of each stock in the portfolio$).$b$)50\%$ Uno, $40\%$ Dos and $10\%$ Tresc$)0\%$ Uno, $0\%$ Dos, $100\%$ Tres