The correct sequence of landforms evolved during the cycle of fluvial erosion is

• Rapids-waterfalls-alluvial fans-peneplain

• Waterfalls-rapids-peneplain-alluvial fans

• Peneplain-alluvial fans-rapids-waterfalls

• Waterfalls-peneplain-alluvial fans-rapids

ASSERTION (A) : In arid and semi-arid regions sheet flood is an important landforming process.

REASON (R) : Arid and semi-arid regions experience high intensity short duration rainfall.

• Both (A) and (R) are true and (R) is the correct explanation of (A).

• Both (A) and (R) are true but (R) is not the correct explanation of (A).

• (A) is true , but (R) is false.

• (A) is false , but (R) is true.