4 points Stock A has an expected return of 2% and a standard deviation of 8%, while stock B has an expected return of 1% and a standard deviation of 5%. The correlation between Stock A and Stock B is 0.10. You decided to invest $5,000 in Stock A and $20,000 in Stock B. What is the portfolio's standard deviation? 5.15% 4.31% 6.39% 4.45% 5.60% Next Previda