A Person Throws Three Rocks Off a Cliff of Height $h$

Multiple Choice

A person throws three rocks off a cliff of height $h$ at exactly the same speed $\left|\vec{v}_{i}\right|$ , each time, but throwing rock $A$ almost vertically upward, rock $B$ horizontally, and rock $C$ almost vertically downward (see the diagram below) .

Which rock hits the ground with the greatest speed? (Ignore air friction.)

A) Rock A
B) Rock B
C) Rock C
D) Rocks A and C hit with the same speed, faster than B.
E) All three rocks hit with the same speed.