A travelling harmonic wave is represented by the equation , where x and y are in meter and t is in seconds. Which of the following is a correct statement about the wave?
(A)The wave is propagating along the positive x-axis with speed 100 ms
(B)The wave is propagating along the positive x-axis with speed 25 ms
(C)The wave is propagating along the negative x-axis with speed 25 msCorrect
(D)The wave is propagating along the negative x-axis with speed 100 ms