Meandering is defined as bending of longitudinal course of rivers. Choose the correct statement(s) regarding this.
(1) Convex side of valley wall is called slip-off slope a site of deposition.
(2) All streams meander in all types of terrains.
(3) Degree of deviation of observed path from expected path is known as sinuosity index.
(4) Incised meanders unlike simple meanders are always dug out in bed rocks.
Correct option is D. All of the above