A portfolio that has an expected outcome of $115 is formed by

A,such a portfolio cannot be formed

B.investing$80 in the risky asset and$20 in the risk-free asset.

c.borrowing$43 at the risk-free and investing the total amount($143)in the risky asset.

D.investing $100 in the risky asset.

E.investing$43 in the risky asset and $57 in the riskless asset.