During the last 4 years, in sequence, an investment has earned annual returns of 2%, 0%, -2%, and 0%. Calculate the geometric average annual return and the estimated (i.e., "sample") standard deviation. During the last 4 years, in sequence, an investment has earned annual returns of 6%, 0%, -6%, and 0%. Calculate the geometric average annual return and the estimated standard deviation. a. Geometric average return = -0.010%, Estimated standard deviation = 1.414% b. Geometric average return = 0.000%, Estimated standard deviation = 1.414% c. Geometric average return = 0.000%, Estimated standard deviation = 1.524% d. Geometric average return = -0.010%, Estimated standard deviation = 1.633% e. None of the other answers are correct f. Geometric average return = 0.000%, Estimated standard deviation = 1.633% g. Geometric average return = -0.010%, Estimated standard deviation = 1.524%