A tuning fork with a frequency of $800\text{Hz}$ produces resonance in a resonance column tube with the upper end open and the lower end closed by the water surface. Successive resonances are observed at lengths of $9.75\text{cm}$, $31.25\text{cm}$, and $52.75\text{cm}$. The speed of the sound in the air is:

1. A
   $500\text{m/s}$
2. B
   $156\text{m/s}$
3. C
   $344\text{m/s}$
4. D
   $172\text{m/s}$