Even if the market is efficient portfolio management still has many useful purposes, including all but which one of the following?

Multiple Choice

Earning positive abnormal returns

Ensuring the portfolio meets the investor's liquidity needs

Constructing a portfollo to minimize tax liability

Identifying risk & choosing the approprlate risk level

What must be the beta of a portfolio with $E(r_p)=24\mathrm{.}80\%,$ if $r_f=4\%$ and $E(r_M)=17\%?($Pound your answer so $2$ decimal plecesi$)$ Beta of portfolio