Suppose Deborah is choosing how to allocate her portfolio between two asset classes: risk$-$free government bonds and a risky group of dive stocks. The following table shows the risk and return associated with different combinations of stocks and bonds.

$\backslash$table$[[,$Fraction of Portfolio in Diversified,Average Annual,Standard Deviation of Portfolio Return$],[$Combination$,$Stocks,$\backslash$table$[[$Return$],[($Percent$)]],\backslash$table$[[($Percent$)]]],[$A$,0,4\mathrm{.}00,($Percent$)],[$B$,25,6\mathrm{.}00,0],[$C$,50,8\mathrm{.}00,10],[$D$,75,10\mathrm{.}00,15],[$E$,100,12\mathrm{.}00,20]]$

If Deborah reduces her portfolio's exposure to risk by opting for a smaller share of stocks, she must also accept a $$ average annual

Suppose Deborah currently allocates $75\%$ of her portfolio to a diversified group of stocks and $25\%$ of her portfollo to risk$-$free bonds; that is$,$ chooses combination $q,$