3. [6 pts). Listed below are the annual rates of return earned on Stock X, Stock Y and Stock Z over the past 6 years. Year Stock X Stock Y Stock Z 2014 20% 16% 0% 2015 15% 17% -2% 2016 -10% 15% 1% 2017 30% 11% 0% 2018 25% 5% 1% 2019 14% -25% 1% As risk-adverse investor, what portfolio would you choose? Here are the options: Stock X only, Stock Y only, Stock Z only, 50/50 split portfolio made of X & Y, or a 90/10 split portfolio made of X & Y. Show your calculations and support your choice