A lemming runs and jumps off a cliff, with its motion completely horizontal as it leaps.
Amazingly, it lands 5 m from the base of a cliff, unharmed. What factors affected where it landed. Choose all that apply.

A. vertical velocity
B. horizontal velocity
C. height of the cliff
D. horizontal acceleration

I chose B, C, and D as my answer. My answer was wrong. Please state your answer and explain why mine was wrong.