A stationary wave forms on a string stretched between two fixed points separated by $48\,\text{cm}$. At one particular instant, the string looks as shown. What is the wavelength of the stationary wave?
- A$16\,\text{cm}$
- B$32\,\text{cm}$
- C$48\,\text{cm}$
- D$72\,\text{cm}$