Pressing the "Loudness Boost" Button on Your Stereo

Multiple Choice

Pressing the "loudness boost" button on your stereo:

A) increases the amplitude of the low-frequency and high- frequency sounds
B) increases the amplitude of the low-frequency sounds while leaving the high-frequency sounds untouched
C) increases the amplitude of the high-frequency sounds while leaving the low-frequency sounds untouched
D) does nothing to the amplitudes of the sounds