A vibrating tuning fork is placed above a measuring cylinder, as illustrated. Water is then added slowly into the measuring cylinder. The first much louder sound is heard when the water surface is $2.9\,\text{cm}$ above the base of the measuring cylinder. A second much louder sound is heard when the water surface reaches $67.3\,\text{cm}$ above the base. The speed of sound in air is $330\,\text{m s}^{-1}$. What is the frequency of the tuning fork?
- A$128\,\text{Hz}$
- B$256\,\text{Hz}$
- C$512\,\text{Hz}$
- D$1024\,\text{Hz}$