In the circuit shown, the reading of ammeter when switch $S$ is open and when switch $S$ is closed respectively are
  • A$3\, A$ and $4\, A$
  • B$4\, A$ and $5\, A$
  • C$5\, A$ and $6\, A$
  • D$6\, A$ and $7\, A$
Medium
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