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When the key $K$ is pressed at time $t = 0$, which of the following statements about the current $I$ in the resistor $AB$ of the given circuit is true
  • A$I = 2 \,mA$ at all $t$
  • B$I$ oscillates between $ 1 \,mA$ and $2\,mA$
  • C$I = 1 \,mA$ at all $t$
  • DAt $t = 0$ , $I = 2 \,mA$ and with time it goes to $1 \,mA$
AIPMT 1995,AIIMS 2008, Medium
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