What Are the Wavelength (In Meters)and Frequency (In Hertz)of a Wave

What are the wavelength (in meters) and frequency (in hertz) of a wave whose displacement is given by the equation y = 0.5 sin(0.20x + 120t) , where x and y are in meters and t is in seconds?

A) 10 m, 0.50 Hz
B) 5.0 m, 10 Hz
C) 19 m, 120 Hz
D) 31 m, 19 Hz
E) 0.20 m, 120 $\sqrt { 2 \pi }$ Hz