The largest deviation from the mean position is called amplitude.
The maximum displacement for A is 10 cm, and
The maximum displacement for B is 5 cm.
A1 / A2 = 10 / 5 = 2 / 1 = 2: 1 is the greatest amplitude ratio.
A has a wavelength of 8 cm.
B has a wavelength of 16 cm.
The wavelength ratio is 8 / 16 = 1 / 2 = 1 / 2 = 1: 2