Gamma has $30,000 of capital per worker, while Omega has $7,500 of capital per worker. In all other respects, the two countries are the same. According to the principle of diminishing returns to capital, an additional unit of capital will increase output ________ in Gamma compared to Omega, holding other factors constant.

In the specific factors model, the effects of trade on welfare are ________ for mobile factors, ________ for fixed factors used to produce the exported good, and ________ for fixed factors used to produce the imported good

A) ambiguous; positive; negative B) ambiguous; negative; positive C) positive; ambiguous; ambiguous D) negative; ambiguous; ambiguous E) positive; positive; positive

If the economy's real GDP doubles in 18 years, we can:

A. not say anything about the average annual rate of growth. B. conclude that its average annual rate of growth is about 5.5 percent. C. conclude that its average annual rate of growth is about 2.4 percent. D. conclude that its average annual rate of growth is about 3.9 percent.