An Object Attached to an Ideal Spring Executes Simple Harmonic

Multiple Choice

An object attached to an ideal spring executes simple harmonic motion. If you want to double its total energy, you could

A) double both the mass and amplitude of vibration.
B) double the mass.
C) double both the amplitude and force constant (spring constant) .
D) double the force constant (spring constant) of the spring.
E) double the amplitude of vibration.