A mass and spring system is undergoing simple harmonic oscillatory motion. There is no friction in the system, so the oscillations can continue forever.

After some amount of time, the spring starts to wear out and become less stiff. This means the spring constant starts to decrease. What, if anything, changes about the motion?

As the spring wears out, the maximum velocity increases while the mass is oscillating.

As the spring wears out, the maximum velocity decreases while the mass is oscillating.

As the spring wears out, the maximum amplitude decreases while the mass is oscillating.

As the spring wears out, the maximum amplitude increases while the mass is oscillating.