Peter is an investor who believes that past variability of stocks is a reasonably good estimate of future risk associated with the stocks. Peter works on creating a new portfolio and has already purchased stock A. Now he considers two other stocks, B and C. Peter collected data on the historic rates of return for all three stocks, which are presented in the following table. Suppose Peter can only afford to complement stock A by adding just one of the two other stocks, either stock B or stock C. Complete the following table by computing correlation coefficients between stocks A and B and between stocks A and C, and calculate average returns and standard deviation for the two potential portfolios, AB and AC