Does a harmonic wave is traveling along the positive x-axis on a string stretched now new wave is established on the string and observed that the wavelength of the new wave is doubled compared to the first wave then:

A) The frequency of the new wave is half of the first wave
B) The frequency of the new wave is the same as the first wave
C) The frequency of the new wave is twice that of the first wave
D) The frequency of the new wave is four times that of the first wave