A long glass tube is placed so that it is nearly fully submerged in a large tank of water. A tuning fork is sounded and held just above the tube’s open end while the tube is slowly lifted. A louder sound is heard for the first time when the height $h$ of the top of the tube above the water is $18.8\,\text{cm}$. The next louder sound is heard when $h$ is $56.4\,\text{cm}$. The speed of sound in air is $330\,\text{m s}^{-1}$. What is the frequency of the sound made by the tuning fork?
- A$220\,\text{Hz}$
- B$440\,\text{Hz}$
- C$660\,\text{Hz}$
- D$880\,\text{Hz}$