The equation of a wave travelling along the positive X-direction is given by y=0.25 × 10^-3sin(500t-0.025x), determine the angular frequency of the wave motion

• A. 0.25 × 10^-3rads^-1
• B. 0.25 × 10^-1rads^-1
• C. 5.0 × 10²rads^-1
• D. 2.50 × 10³rads^-1