Question 37 2.5pts Let's say Tim invested 55% of his money to buy ABC Corp.'s shares and 45% of his money to buy DEF Corp's shares in 2016. From 2017 to 2020. ABC Corp. generated the total return percentage of 11%,11%,12%,11.5%. DEF Corp. generated the total return percentage of 10%,22%,8%, and 19% during the same time period. What was the average rate of return for the portfolio (plain English: Tim's investment as a whole) from 2017 to 2020 ? 8.84% 9.85% 10.48% 11.92% Question 38 2.5 pts Same facts as above: what is the standard deviation of the portfolio's returns from 2017 to 2020 ? 5.63% 8.00% 7.62% 8.28%