Why Was There a 'Forest Emergency' in Postwar Japan

Multiple Choice

Why was there a 'forest emergency' in postwar Japan?

A) Because American defoliants had destroyed much of Japan's forest
B) Because wartime usage had stripped many of Japan's forests bare
C) Because ordinary people were chopping down large quantities of trees for home heating
D) Because a blight had caused the death of over 80% of Japan's trees.