your portfolio consists of $50,000 invested into stock X and $50,000 invested into stock Y. both stocks have an expected return of 15% and a standard deviation of 30%. the returns of the two stocks are independent, so their correlation of their returns is equal to zero. which of the following statements is/ are true about the 2-stock portfolio?

A) Your portfolio has a standard deviation of 30% and its expected return is less than 15%

B) your portfolio has a standard deviation less an 30% and its expected return is less than 15%

C) Your portfolio has a standard deviation less an 30%, and its expected return is 15%

D) Your portfolio has a standard deviation of 30%, and it's expected return is 15%

E) more than one of these answers are correct