Which of the Following Statements Is Not True

Which of the following statements is not true?

A) Frequency theory alone fully explains neural coding of high frequency sounds, but only place theory can fully explain neural coding of low frequency sounds.
B) Both frequency theory and the volley principle are necessary to fully explain pitch discrimination.
C) Frequency theory must be supplemented by the volley principle in order to fully explain how we hear sounds up to 4,000 hertz.
D) Frequency theory is insufficient to describe how high frequency tones are heard, because neurons cannot fire as rapidly as high frequency sound waves vibrate.