Which of the following is a public good?

The bowed shape of the traditional production possibilities curve reflects the

A) negative side effects of economic growth. B) fact that not all resources are equally well-suited to producing all goods. C) costs of unemployment. D) problems of inequality.

Consider a wine maker who has put her wine in bottles. The question is whether to store the wine for a marginal cost of $1 per year or to sell the wine today at a price of $10. If the interest rate is 6%, how much must the price of the wine increase in the next year to justify storing it?

A) $1.66 B) $1.27 C) $0.72 D) $0.45