Transverse waves on a string have wave speed $10\mathrm{.}0$ m$/$s$,$ amplitude $0\mathrm{.}0600$ m$,$ and wavelength $0\mathrm{.}320$ m$.$

The waves travel in the $+$x direction, and at t $=0$ the x $=0$ end of the string has its maximum upward

displacement. What is wave number of these waves?

$($a$)31\mathrm{.}2$ rad$/$m $($b$)0\mathrm{.}0320$ rad$/$m $($c$)196$ rad$/$m $($d$)19\mathrm{.}6$ rad$/$m $($e$)0\mathrm{.}0600$ rad$/$m