Your portfolio is invested $25$ percent each in Stocks A and C$,$ and $50$ percent in Stock B$.$ What is the standard deviation of your portfolio given the following information?

$\backslash$table$[[$State of Economy,$\backslash$table$[[$Probability of State$],[$of Economy$]],$Rate of Return if State Occurs,,$],[$Boom$,$Stock A$,$Stock B$,$Stock C$,],[$Good$,0\mathrm{.}07,0\mathrm{.}28,0\mathrm{.}14,0\mathrm{.}11],[$Poor$,0\mathrm{.}55,0\mathrm{.}19,0\mathrm{.}12,0\mathrm{.}09],[$Bust$,0\mathrm{.}36,-0\mathrm{.}21,0\mathrm{.}07,0\mathrm{.}06],[,0\mathrm{.}02,-0\mathrm{.}65,0\mathrm{.}03,-0\mathrm{.}03]]$

$6\mathrm{.}52\%$

$9\mathrm{.}64\%$

$12\mathrm{.}72\%$

$10\mathrm{.}89\%$

$7\mathrm{.}39\%$