MHT CET Physics question

If the wave equation of a particle is represented by, , where x and y are measured in metre and t is measured in seconds, then the wave equation represents a wave travelling in

• (A)The positive x-direction with velocity 4 m/s and wavelength 0.1 m
• (B)The positive x-direction with velocity 4 m/s and wavelength 0.4 mCorrect
• (C)The negative x-direction with velocity 1 m/s and wavelength 0.4 m
• (D)The negative x-direction with velocity 4 m/s and wavelength 0.1 m