There exists a market where all securities have a return standard deviation equal to 0.8. All securities are perceived to have independent return outcomes; that is, returns between pairs of securities are uncorrelated. (a) What would be the return standard deviation of a two-security portfolio in this market? (b) What would be the return standard deviation of a 16-security portfolio in this market? (c) Suppose that all securities in this market have an expected return equal to 0.10. How do the expected returns of the portfolios in parts (a) through (b) differ