Can someone answer this question?

3. You want to build a portfolio. You have a few stocks that you want to put in your US Market Portfolio portfolio. Their payoffs are: States Probability Return 15% 10% -5% Stock A Stock B Stock CT-Bill | 24.60% | 11.40%|-11.40%| 3% 2% 1090 | | 80 % | 16.40%| 7.60%|-7.60%| 2 10% 1% Expected Payoff 14.60% | 6.90% | -6.40% | 72.13%-12.62%24.97%2 Variance You decide to put these three stocks into your portfolio, with portions of 30% (Stock A), 40% (Stock B), and 30% (Stock C). Calculate the expected return and variance of the portfolio. Comment on the expected payoff and variance of the portfolio comparing to the expected payoffs and variances of each stock. What is the beta of this portfolio