Which of the following components of spending is not treated as a given value in the short-run macro model?

Agricultural price supports in the United States

A) harm U.S. consumers, U.S. taxpayers, and foreign farmers and creates a deadweight loss. B) benefit U.S. taxpayers, U.S. farmers, and U.S. consumers. C) create gains to U.S. farmers that are at least as large as losses to U.S. consumers. D) decrease the deadweight loss and improve market efficiency. E) None of the above answers is correct.

Suppose there's a 50% chance of a stock rising by 20% and a 50% chance of it falling by 20%. What is the expected rate of return on the stock?

A) -20% B) 0% C) 10% D) 20%