Suppose that many stocks are traded in the market and that it is possible to borrow at the risk$-$free rate, $r_f.$ The characteristics of two of the stocks are as follows:

$\backslash$table$[[$Stock$,\backslash$table$[[$Expected$],[$Return$]],\backslash$table$[[$Standard$],[$Deviation$]]],[$A$,7\%,45\%$