A Wave Is Described by the Function Y(x,t) = (3

A wave is described by the function y(x,t) = (3.00 cm) cos[( 3.00 m^-1) x + ( 4.00 s^-1) t]. What is the wavelength of this wave?

A) 2.09 m
B) 3.00 m
C) 0.333 m
D) 0.250 m
E) 1.57 m