In a travelling wave , propagating to the right , select the correct statement(s)

 

At the instant shown , both A and G are passing through their equilibrium positions and hence their speed will be maximum.

Phase difference between B and E =$\frac{2\mathrm{\pi }}{\lambda }\times \frac{\lambda }{2}={180}^0$

B and I are at their extreme positions and are at rest.

The crests are moving to the right .So all particles of the segments BD and IJ must be moving upward .