A wave equation which gives the displacement along the y direction is given by `y=10^(-4)sin(60t+2x)`, where x and y are in meters and t is time in seconds This represents a wave
A. Travelling with a velocity of 30 m/sec in the negative X direction
B. Of wavelength `pi` metre
C. Of frequency `30//pi Hz`
D. Of amplitude `10^(4)` metre travelling along the negative X direction