A Particle Is Released from Rest at the Point X

A particle is released from rest at the point x = a and moves along the x axis subject to the potential energy function U(x) shown. The particle:

A) moves to a point to the left of x = e, stops and remains at rest
B) moves to a point to x = e, then moves to the left
C) moves to infinity at varying speed
D) moves to x = b where it remains at rest
E) moves to x = e and then to x = d, where it remains at rest