Why Has Japan Been So Successful in Its Efforts to Preserve

Why has Japan been so successful in its efforts to preserve its forests?

A) They have developed a wood-free paper.
B) On a per capita basis, the Japanese use fewer wood products as compared to anyone else in the world.
C) The fertile Japanese soils allow for astounding rates of vegetation regrowth.
D) They have developed substitutes for wood in construction.
E) The Japanese import most of their wood products from other locations around the world.