In Exhibit 5-24, the risk and return of the points marked are as follows:

Answer the following questions with reference to the points plotted on Exhibit 5-24 and explain your answers. The investor is choosing one portfolio based on the graph.
1. Which of the preceding points is not achievable?
2. Which of these portfolios will not be chosen by a rational, risk-averse investor?
3. Which of these portfolios is most suitable for a risk-neutral investor?
4. Gold is on the inefficient part of the feasible set. Nonetheless, gold is owned by many rational investors as part of a larger portfolio. Why?
5. What is the utility of an investor at point P with a risk aversion coefficient of 3?

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Point Return Risk Point Return Risk ACF2 15% 10% B 11% 10% 15% 30% D 25% 30% 4% 0% G (gold) 10% 30% P 16% 17%