An investment has offered the following annual returns over the last 5 years: 10%, 20%, 8%, 5%, and -5%. How much is the average return and standard deviation for this return distribution?

7.6% and 8.06%

7.6% and 6.5%

9.6% and 5.53%

7.6% and 9.02%

9.6% and 6.19%