As a wave moves through a medium at a speed v, the particles of the medium move in simple harmonic motion about their undisturbed positions. The maximum speed of the simple harmonic motion is vmax. When the amplitude of the wave doubles, ________________.
(a) V doubles, but vmax remains the same
(b) V remains unchanged, but vmax doubles
(c) Both v and vmax remain unchanged
(d) Both v and vmax double