Farm outputs' share of U.S. GDP from 1950 to the present has

dropped from about 7 percent to 1 percent.

stayed roughly constant at about 30 percent.

dropped from about 30 percent to 10 percent.

stayed roughly constant at about 10 percent.

The short-run instability in the prices of agricultural products arises from the following factors,except

fluctuations in farm outputs.

fluctuations in demand for the products.

inelastic demand for the products.

fluctuations in incomes of the farmers.