When a wave goes from one level to another, there is a change in the(i) Velocity(ii) Amplitude(iii) Frequency (iv) Wavelength Choose the correct answer

When a wave goes from one level to another, there is a change in the(i

1.	When a wave goes from one level to another, there is a change in the(i) Velocity(ii) Amplitude(iii) Frequency (iv) Wavelength Choose the correct answer
A.	Only (i)
B.	(i) and (ii)
C.	(i), (ii) and (iv)
D.	All of them
Answer» D. All of them