please please solve this problem urgently and perfectly. make sure to give correct answer urgently and perfectly. mention correct answer as you give

You are a mean-variance investor. You are currently holding the market portfolio but are searching for investments that will improve your performance. The following table provides information about some assets in the market. In which of the following assets, if any, would you want to add a small, long position to your portfolio? Mutual Fund C Bond Fund A Hedge Fund B None of the above