In country A, it takes 10 labor hours to produce cloth and 20 labor hours to produce grain. In country B, it takes 20 labor hours to produce cloth and 10 labor hours to produce grain. Which country should produce grain?
A. No country should produce grain.
B. Both A and B should produce grain.
C. A
D. B.
Answer:D
In country A, it takes 10 labor hours to produce cloth and 20 labor hours to produce grain. In country B, it takes 20 labor hours to produce cloth and 10 labor hours to produce grain. Which country should produce grain?
A. No country should produce grain. B. Both A and B should produce grain. C. A D. B.