\fAn investor is considering four investments, A, B, C, and leaving his money in the bank. The payoff from each investment is a function of the economic climate over the next two years. The economy can expand or decline. The following payoff matrix has been developed for the decision problem. The investor has estimated the probability of a declining economy at 70% and an expanding economy at 30%. (All payoffs are in thousand dollars) Economy Investment Decline Expand A O 80 B 30 70 C 50 35 Bank 20 20