Based on the following information regarding Stock U$,$ Stock D and Stock T$,$

a$)$ Calculate the expected return and standard deviation for U$.$

b$)$ Calculate the expected return and standard deviation for D$.$

c$)$ Calculate the expected return and standard deviation for T$.$

d$)$ Calculate the expected return and standard deviation for the three asset portfolio assuming the portfolio consists of the following weights: $40\%$ U$,50\%$ D$,10\%$ T

e$)$ Which of the above options you prefer to invest: $100\%$ invested in U$,100\%$ in D$,100\%$ in T$,$ or the portfolio comprised of all three stocks mentioned in part d$?$ Explain why

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