The diagram shows a side view of a water wave at a particular time. The diagram is drawn full size.
Which statement about the wave is correct?

1 )
The wave is longitudinal and the frequency can be measured from the diagram.
2 )
The wave is longitudinal and the wavelength can be measured from the diagram.
3 )
The wave is transverse and the frequency can be measured from the diagram.
The wave is transverse and the wavelength can be measured from the diagram.
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