An investor may invest in a high-risk stock with a return of $1,500 if the stock market goes up, $100 if the market remains the same, and -$1,000 if the market goes down. Alternatively, the investor may invest in a low-risk stock with a return of $1,000 if the market goes up, $200 if the market remains the same, and -$100 if the market goes down. Another option for the investor is to invest in a savings account and receive a fixed return. The investor does not know the probabilities that the market goes up, remains the same, and goes down. Suppose that the investor may hire a financial adviser who has "perfect" information about the stock market. What should be the return for the savings account such that the maximum amount the investor is willing to pay the financial adviser is $0