In a transistor, a change of $8.0 mA$ in the emitter current produces a change of $7.8 mA$ in the collector current. What change in the base current is necessary to produce the same change in the collector current
  • A$50 \mu A$
  • B$100 \mu A$
  • C$150 \mu A$
  • D$200 \mu A$
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