An open-end organ pipe $$30\,\text{cm}$$ in length and a closed-end organ pipe $$23\,\text{cm}$$ in length, both of equal diameter, are each sounding their first overtone and both are in unison at $$1100\,\text{Hz}$$. The speed of sound in air is estimated to be nearly

A

$$324\,\text{m s}^{-1}$$

B

$$332\,\text{m s}^{-1}$$

C

$$340\,\text{m s}^{-1}$$

D

$$352\,\text{m s}^{-1}$$