A sonometer wire having a length of 50 cm is vibrating in the fundamental made with a frequency of 100 Hz. Which of the following is the type of propagating wave and its speed ?

• A. Longitudinal, 50 m / s
• B. Transverse, 50 m / s
• C. Longitudinal, 100 m / s
• D. Transverse, 100 m / s