The difference between GDP and disposable income is

The figure above shows the market for a good with an external benefit. The efficient level of production is ________ units because ________

A) 8; marginal benefit equals marginal cost B) 8; marginal cost is less than marginal social benefit C) 10; marginal cost equals marginal social benefit D) 10; marginal social benefit exceeds marginal benefit E) 8; marginal benefit equals the marginal external benefit

When a country keeps its workers as fully employed as possible, it achieves a higher level of GDP than if many of its workers were idle

a. True b. False Indicate whether the statement is true or false