A string of length $0\mathrm{.}800$ m is vibrating at $135$ Hz in its second harmonic and producing sound that moves at $340\frac{m}{s}.$

Part A

What is true about the frequency and wavelength of this sound?

Select all that apply.

The frequency of the sound is $425$ Hz $.$

The wavelength of the sound is $0\mathrm{.}800$ m $.$

The frequency of the sound is $135$ Hz $.$

The wavelength of the sound is $2\mathrm{.}52$ m