help please

(Related to Checkpoint 7.1) (Expected rate of return and risk) B.J. Gautney Enterprises is evaluating a security. One-year Treasury bills are currently paying 3.9 percent. Calculate the investment's expected return and its standard deviation. Should Gautney invest in this security? (Click on the icon be in order to copy ifs contents into a spreadshoet) a. The investments expected return is \%. (Round to two decimal places) b. The investment's standard deviation is \%. (Round to two docimat placos) c. Should Gauthey invest in this security? (Select the best choice below) A. Yes B. J Gautney Enterpnses should invest in this investment because the return is lower than the Treasury bill and the level of risk higher than the Treasury bill B. No. B J. Gautney Enterpnses should not invest in this investment because the return is lower than the Treasury bill and the level of risk higher than the Treasury bil