Landslides Along Cut Banks Are Common;how Would a Landslide Along

Landslides along cut banks are common;how would a landslide along a cut bank affect the discharge of a river (hint: the equation for discharge is D = Ac x Vₐ) ?

A) The discharge would decrease because the velocity of the river would increase.
B) The discharge would increase because the velocity of the river would decrease.
C) The discharge would increase because the cross-sectional area of the river would decrease.
D) The discharge would increase because the cross-sectional area of the river would increase.