According to Megaworld Corporation, their returns over the last three years have been 7 percent, 13 percent, and 10 percent, respectively. Calculate the variance and standard deviation of the returns using the following formulas: Variance (m) = expected value of (mm) Standard deviation of rm =- 30.00 and 10.00 percent = variance(rm). 6.00 and 2.45 percent 124.00 and 11.10 percent 64.00 and 8.00 percent