Which one of the following statements does not accurately describe the diatonic scale as it corresponds to the setup on a piano keyboard?
a. the white keys are used to produce frequencies for the key of c.
b. striking a key on a piano keyboard produces a sound with a specific frequency.
c. a scale would include a series of eight notes, where the first and seventh notes have the same letter.
d. the black keys are used to produce the five notes that correspond to additional frequencies on the even-tempered scale for the key of c.