In the arrangement shown in the figure,there are two coils wound on a non-conducting cylindrical rod. Initially,the key is not inserted. Then the key is inserted and later removed. Then

  • A
    the deflection in the galvanometer remains zero throughout
  • B
    there is a momentary deflection in the galvanometer but it dies out shortly and there is no effect when the key is removed
  • C
    there are momentary galvanometer deflections that die out shortly; the deflections are in opposite directions
  • D
    there are momentary galvanometer deflections that die out shortly; the deflections are in the same direction

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