For a Rockfall,what Two Factors Lead to a Greater Distance

For a rockfall,what two factors lead to a greater distance of travel of the moving debris?

A) more water in the mass and release promoted by freezing
B) greater height of fall and a block that is not too angular
C) greater size of the falling mass and smaller particles
D) greater height of fall of the mass and greater volume of the falling mass
E) greater height of fall and higher clay content