A piece of cork is foating on water in a small tank. The cork oscillates up and doen vertically when small ripples pass over the surface of water. The velocity of the ripples being `0.21ms^(-1)`, wavelength 15mm and amplitude 5mm, the maximum velocity of hte piece of cork is
A. `0.44ms^(-1)`
B. `0.24ms^(-1)`
C. `2.4ms^(-1)`
D. `4.4ms^(-1)`