An investor chooses a portfolio of a risky asset and a risk-free asset. in which the weight on the risk free asset lis negative. Wnich statements below is/are true? . The portfolio reflects a leveraged investment in the risky asset 11. The investor borrows at the risk free tate. III. The investor's portfolio has higher expected return than the expected return of the risky asset IV. The investor's portfolio has lower risk than that of the risky asset. Illand IV I only O and I lil only