The equation of progressive wave is \[y=0.2\sin 2\pi \left[ \frac{t}{0.01}-\frac{x}{0.3} \right]\], where \[x\] and \[y\] are in metre and \[t\] is in second. The velocity of propagation of the wave is [KCET 2000]

• A.            30 m/s                                    
• B.            40 m/s
• C.            300 m/s                                  
• D.            400 m/s