If a demand curve is unit elastic, then P times Q will remain constant when P changes

A good or service or a resource is nonexcludable if

A) it is possible to prevent someone from enjoying its benefits. B) it is not possible to prevent someone from benefiting from it. C) its use by one person decreases the quantity available for someone else. D) its use by one person does not decrease the quantity available for someone else.

Federal budget deficits became progressively smaller during the 1990s, and turned into a surplus by 1998

Indicate whether the statement is true or false