Question Statement:
Contour bunding is primarily recommended for areas with:
Options:
- (A) Annual rainfall lt; 600\text{ mm}$ and land slope lt; 6\%$
- (B) Annual rainfall gt; 1500\text{ mm}$ and land slope gt; 15\%$
- (C) Clayey soils prone to waterlogging with slope gt; 10\%$
- (D) High rainfall tropical forests