The diagram above shows the wire of a sonometer box set into resonance by a vibrating tuning fork of frequency f, when the wire is stretched by a tension T, the resonating length of the wire is I while the wavelength of the sound produced is \(\lambda\). Which of the following statements is not correct? The wave produced on the wire is

A. stationary and lonitudinal  
B. stationary and mechanical
C. mechanical and longitudinal
D. progessive and transverse

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Correct Answer: A