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

Multiple Choice

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 Hz