There are three stocks, A, B, and C. You can either invest in these stocks or short sell them. There are three possible states of nature for economic growth in the upcoming year (each equally likely to occur); economic growth may be strong, moderate, or weak. The returns for the upcoming year on stocks A, B, and C for each of these states of nature are given below: Stock Strong Growth State of Nature Moderate Growth 17% Weak Growth A 39% -5% B 30% 5% 0% 6% 14% 22% and a long position If you wanted to take advaitage of a risk-free arbitrage opportunity, you should take a short position in in an equally weighted portfolio of O a.C, A and B b. B, A and C OCA and B, C O d. A, B and C