Security A's Expected Return Is 10 Percent While the Expected

Security A's expected return is 10 percent while the expected return of B is 14 percent.The standard deviation of A's returns is 5 percent, and it is 9 percent for B.An investor plans to invest equal amounts in A and B.Which of the following statements is true about this portfolio consisting of stock A and stock B.

A) The risk of the portfolio is equal to 7 percent.
B) The lower the correlation of returns between the two stocks, the higher the portfolio's risk.
C) The risk of the portfolio is primarily dependent on the utility function of the investor.
D) The higher the correlation of returns between the two stocks, the higher the portfolio's risk.