The "rational expectations revolution" refers to a substantial change in the thinking of ________

In the long run

A) fixed costs tend to be greater than variable costs. B) variable costs tend to be greater than fixed costs. C) all costs are fixed costs. D) all costs are variable costs.

If the United States' maximum possible output of any one good is produced, given the output of other goods, we have attained ____________.

Fill in the blank(s) with the appropriate word(s).