In U.S. price support programs, the "loan rate" is:______.
a. determined by Federal Reserve policy.
b. the interest rate a farmer must pay if he borrows from the government with his crop as collateral.
c. the difference between the market price and the target price.
d. the proportion of the farmer's crop he can loan to the government.
e. the effective price (i.e. price floor) for the commodity to ensure loan repayment.