An Object of Mass 1

An object of mass 1.00 kg is attached to a vertical spring with spring constant 100 N/m. The object is held at rest in a position such that the spring is stretched upward a distance 1.00 cm beyond its undisturbed length. If the object is released, how far will it drop before coming to rest?

A) 2.06 cm
B) 2.00 cm
C) 2.94 cm
D) 3.06 cm
E) 1.94 cm