Portfolio K invests in two risky stocks, Stock $x$ and Stock $Y,$ with ${}_{x,Y}=0\mathrm{.}24.$ Portfolio $L$ invests in two risky stocks, Stock A and Stock $B,$ with ${}_{A,B}=-0\mathrm{.}24.$ Between Portfolio $K$ and Portfolio $L,$ which portfolio is a better portfolio? Explain. $[$Do not type your answer in Canvas$]$