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Helper classes in ns-3 are used to create network topologies with their attributes given as input. PointToPointGridHelper is a class that helps in creating a grid topology with the number of rows and columns specified by the user. An example to demonstrate its usage with NetAnim is given in ‘src/netanim/examples/grid-animation.cc’. The default grid size in the program is 5x5. This task is aimed at modifying the program to simulate a grid of 3x4, and visualizing the animation with NetAnim. Submit two snapshots of the NetAnim animation for evaluation.