An Object Moving with Speed $\left|\vec{v}_{0}\right|$ Collides Head-On with an Object at Rest That Is Very

An object moving with speed $\left|\vec{v}_{0}\right|$ collides head-on with an object at rest that is very much more massive. If the collision is elastic, how does the lighter object's speed $|\vec{v}|$ after collision compare to $|\vec{v}|$ ?

A) $|\vec{v}| \approx-\overrightarrow{v_{0}}$
B) $|\vec{v}| \approx \overrightarrow{v_{0}}$
C) $|\vec{v}| \approx-\frac{1}{2}\left|\vec{v}_{0}\right|$
D) $|\vec{v}| \approx \frac{1}{2}\left|\vec{V}_{0}\right|$
E) $|\vec{v}| \ll-\left|\vec{V}_{0}\right|$
F) $|\vec{v}| \ll\left|\vec{V}_{0}\right|$