You invest $100 in a complete portfolio. The complete portfolio is composed of a risky asset with an expected rate of return of 9% and a standard deviation of 19% and a treasury bill with a rate of return of 2%. If you wanted to limit the risk of the portfolio to 10%, what percentage of your money should be invested in the risky asset?

A.) 44.2%

B.) 47.4%

C.) 50%

D.) 52.6%