The returns of stock ZZZ over the past 5 years have been 21.54%, -11.06%, -7.91%,

-4.13%, and -7.29%. The risk-free rates over the past five years were 2.12%, 2.63%,

2.36%, 2.17%, and 2.91%, respectively. The standard deviation of the stock's excess

returns over the past 5 years is 13.4649% (I'm giving this to you so you don't have to

calculate it yourself). What is the Sharpe ratio of the stock based on its past 5 years

of returns? Round all intermediate calculations to 6 decimal points. Your final answer

should be within 0.03 of the correct answer choice.

-0.13

0.05

-4.21

-0.31