If the MPS = 0.25, and intended investment falls from $100 to $75, national income will decrease by

An increase in the world relative demand for U.S. output causes

A) a short-run real depreciation of the dollar against the euro. B) a long-run real appreciation of the dollar against the euro. C) a long-run real depreciation of the dollar against the euro. D) a short-run real appreciation of the euro against the dollar. E) a long-run real appreciation of the euro against the dollar.

The monopolist's outcome happens at a:

A. cost that is equal to a perfectly competitive one. B. lower price than the perfectly competitive one. C. lower quantity than the perfectly competitive one. D. higher quantity than the perfectly competitive one.