When a train stops suddenly,passengers in the running train feel an instant jerk in the forward direction because

  • A
    The back of the seat suddenly pushes the passengers forward.
  • B
    Inertia of rest stops the train and takes the body forward.
  • C
    The upper part of the body continues to be in the state of motion,whereas the lower part of the body in contact with the seat comes to rest.
  • D
    Nothing can be said due to insufficient data.

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