Here are the percentage returns on two stocks. Digital Cheese Executive Fruit Month January February Neron April Ney June July August a-1. Calculate the monthly varlance and standard deviation of each stock. (Do not round Intermediate calculations. Round your answers to 1 decimal places.) Digital Cheese Executive Fruit Variance Standard deviation a-2 which stock is the riskler if held on its own? O Digital Cheese O Executive Fruit 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% c. Is the variance more or less than half way between the variance of the two Individual stocks? O more than the 50%-50% O less than the 50%-50%