Here are the percentage returns on two stocks Digital Cheese 175 -3 Month January February March April May June July August Executive Fruit 98 1 5 14 2 a-1. Calculate the monthly variance and standard deviation of each stock. (Do not round intermediate calculations. Round your answers to 1 decimal places.) Digital Cheese 0.6 73 Executive Fruit 02 Variance Standard deviation% 55 b. Now calculate the variance and standard deviation of the returns on a portfolio that invests an equal amount each month in the two stocks. (Do not round intermediate calculations. Round your answers to 1 decimal places.) Variance Standard deviation % 0.0 6.01 c. Is the variance more or less than half way between the variance of the two individual stocks? O more than the 50%-50% less than the 50%-50%