Consider two stocks, A and B. For three possible states (w1,w2,w3), the payoff of stocks after year would be as the following:
A: w1: 8 w2: 4 w3: 3
B: w1: 1 w2: 1 w3: 1
The prices of stocks at current time are 5 and 1, respectively.
Show that there are no arbitrage opportunities in this economy. Then, give possible two sets of state prices.