Consider the portfolios below. Portfolio Expected Return (%) Risk (%) A 13% 17% B 12% 18% 18% 30% Answer the following question based on this information. You are considering investing $10,000 as follows: half in a 10-year treasury yielding 3% and half in one of the portfolios A, B or C. Which one should you pick if you want to maximize the amount of return per unit of risk? portfolio A portfolio B portfolio C any of the 3 portfolios will do