You invest \$1,600 in a complete portfolio. The complete portfolio is composed ot a risky asset with an expected rate of return of 15% and a standard deviation of 30% and a Treasury bill with a rate of return of 896 . of your cornplete portfolio should be invested in the risky portfolio if you want your complete portfollo to have a standard deviation of 259 . 12.50% 32.25% 83.33% 55.55%