Most macroeconomic variables that measure some type of income, spending, or production fluctuate very separately from each other.

A persistent shortage or surplus of a currency under the Bretton Woods system was evidence of

A) failure to support the existing fixed exchange rate by central banks. B) speculation against the currency by speculators in world exchange markets. C) fundamental disequilibrium in the country's exchange rate. D) all of the above

A public good is a good that is both rival and excludable

Indicate whether the statement is true or false