Which of the following make up a chromatic scale?
A:whole steps
B:whole and half steps
C:half steps
D:only natural notes
C: half steps
A chromatic scale consists of twelve pitches, each a semitone above or below another. It is a non-diatonic scale that includes all twelve pitches, each a half step (also known as a semitone) apart. There are no whole steps in a strict chromatic scale, only half steps.