The frequency of a sound wave rises from $31\,000\,\text{Hz}$ to $32\,000\,\text{Hz}$. What type of wave is this, and what would it be heard as by a human with normal hearing?
- AIt is a longitudinal wave with a decreasing pitch.
- BIt is a transverse wave with an increasing pitch.
- CIt is a longitudinal wave that cannot be heard by a human with normal hearing.
- DIt is a transverse wave that cannot be heard by a human with normal hearing.