A transverse sinusoidal wave of amplitude `a`, wavelength `lambda` and frequency `f` is travelling on a stretched string. The maximum speed of any point in the string is `v//10`, where `v` is the speed of propagation of the wave. If `a = 10^(-3)m` and `v = 10ms^(-1)`, then `lambda` and `f` are given by
A. `lamda=2pixx10^(-3)m`
B. `lamda=10^(-3)m`
C. `f=10^(3)//(2pi)Hz`
D. `f=10^(3)Hz`