An investor has a portfolio of two assets A and B. The details are shown in the below table. Portfolio Details . Expected Standard Expected Asset Covariance (AB) return deviation Portfolio Return 0.05 0.4 0.15 0.1 B 0.06 0.5 A Which one of the following statements is NOT correct? O a. The asset A can be a real estate asset. O b. The portfolio weight in asset A is -400%. Oc. The correlation of asset A and B's returns is 0.75. od. The portfolio has some diversification. Oe. The variance of the portfolio is 2.81