Talal is a confident investor. He has $$20,000$ in his account at Options Xpress. Only through this account, he invested $$28,000$ into a broad$-$based market index fund.What is the beta of Talal's portfolio? $0\mathrm{.}400\mathrm{.}60$O $1\mathrm{.}00$O $1\mathrm{.}40$