Imagine a Mousetrap with the Spring Arm Set and Latched,and

Imagine a mousetrap with the spring arm set and latched,and with the level of potential energy high.This potential energy was added to the mousetrap

A) when it was first constructed.
B) as kinetic energy when the arm was pulled back and latched.
C) when the latch was released and the arm sprang forward.
D) when the various materials used to construct the mousetrap were selected.